Lesson One（4学时）
Inside the Living Cell: Structure and
Function of Internal Cell Parts
Cytoplasm: The Dynamic, Mobile Factory
细胞质：动力工厂
Most of the properties we associate with life are properties of the cytoplasm. Much of the mass of a cell consists of this semifluid substance, which is bounded on the outside by the plasma membrane. Organelles are suspended within it, supported by the filamentous network of the cytoskeleton. Dissolved in the cytoplasmic fluid are nutrients, ions, soluble proteins, and other materials needed for cell functioning.
生命的大部分特征表现在细胞质的特征上。细胞质大部分由半流体物质组成，并由细胞膜（原生质膜）包被。细胞器悬浮在其中，并由丝状的细胞骨架支撑。细胞质中溶解了大量的营养物质，离子，可溶蛋白以及维持细胞生理需求的其它物质。
The Nucleus: Information Central（细胞核：信息中心）
The eukaryotic cell nucleus is the largest organelle and houses the genetic material (DNA) on chromosomes. (In prokaryotes the hereditary material is found in the nucleoid.) The nucleus also contains one or two organelles-the nucleoli-that play a role in cell division. A pore-perforated sac called the nuclear envelope separates the nucleus and its contents from the cytoplasm. Small molecules can pass through the nuclear envelope, but larger molecules such as mRNA and ribosomes must enter and exit via the pores.
真核细胞的细胞核是最大的细胞器，细胞核对染色体组有保护作用（原核细胞的遗传物质存在于拟核中）。细胞核含有一或二个核仁，核仁促进细胞分裂。核膜贯穿许多小孔，小分子可以自由通过核膜，而象mRNA和核糖体等大分子必须通过核孔运输。Organelles: Specialized Work Units（细胞器：特殊的功能单位）
All eukaryotic cells contain most of the various kinds of organelles, and each organelle performs a specialized function in the cell. Organelles described in this section include ribosomes, the endoplasmic reticulum, the Golgi complex, vacuoles, lysosomes, mitochondria, and the plastids of plant cells.
所有的真核细胞都含有多种细胞器，每个细胞器都有其特定功能。本节主要介绍核糖体，内质网，高尔基体系，液泡，溶酶体，线粒体和植物细胞中的质体。
The number of ribosomes within a cell may range from a few hundred to many thousands. This quantity reflects the fact that, ribosomes are the sites at which amino acids are assembled into proteins for export or for use in cell processes. A complete ribosome is composed of one larger and one smaller subunit. During protein synthesis the two subunits move along a strand of mRNA, "reading" the genetic sequence coded in it and translating that sequence into protein. Several ribosomes may become attached to a single mRNA strand; such a combination is called a polysome. Most cellular proteins are manufactured on ribosomes in the cytoplasm. Exportable proteins and membrane proteins are usually made in association with the endoplasmic reticulum.
核糖体的数量变化从几百到几千，核糖体是氨基酸组装成蛋白质的重要场所。完整的核糖体由大亚基和小亚基组成。核糖体沿着mRNA移动并阅读遗传密码，翻译成蛋白质。一条mRNA上可能有多个核糖体，称多聚核糖体。大多数细胞蛋白是由细胞质中核糖体生产。输出蛋白和膜蛋白通常与内质网有关。
The endoplasmic reticulum, a lacy array of membranous sacs, tubules, and vesicles, may be either rough (RER) or smooth (SER). Both types play roles in the synthesis and transport of proteins. The RER, which is studded with polysomes, also seems to be the source of the nuclear envelope after a cell divides.
内质网，带有花边的生物囊，有管状，泡状之分，以及光滑和粗糙面区别。两种都与蛋白质的合成和运输有关。粗糙内质网上分布许多核糖体，也可能提供细胞分裂后所需的细胞膜。
SER lacks polysomes; it is active in the synthesis of fats and steroids and in the oxidation of toxic substances in the cell. Both types of endoplasmic reticulum serve as compartments within the cell where specific products can be isolated and subsequently shunted to particular areas in or outside the cell.
光滑内质网上无核糖体，主要作用是脂肪和类固醇的合成以及细胞内有毒物质的氧化。两种内质网合成的产物在其中进行分流或运输到细胞外。
Transport vesicles may carry exportable molecules from the endoplasmic reticulum to another membranous organelle, the Golgi complex. Within the Golgi complex molecules are modified and packaged for export out of the cell or for delivery else where in the cytoplasm.
运输小泡能够将可运输分子从内质网运输到高尔基复合体上。在高尔基复合体中修饰，包装后输出细胞或传递到细胞质中的其他场所。
Vacuoles in cells appear to be hollow sacs but are actually filled with fluid and soluble molecules. The most prominent vacuoles appear in plant cells and serve as water reservoirs and storage sites for sugars and other molecules. Vacuoles in animal cells carry out phagocytosis (the intake of particulate matter) and pinocytosis (vacuolar drinking).
细胞中的液泡好象是中空的，但实际上充满了液体和可溶分子。最典型的液泡存在于植物细胞中，储备水，糖以及其它分子。动物中的液泡起吞噬和胞饮作用。
A subset of vacuoles are the organelles known as lysosomes, which contain digestive enzymes (packaged in lysosomes in the Golgi complex) that can break down most biological macromolecules. They act to digest food particles and to degrade damaged cell parts.
溶酶体是液泡亚单位，含有消化酶，降解大部分生物大分子。消化食物微粒和降解损伤的细胞残片。
Mitochondria are the sites of energy-yielding chemical reactions in all cells. In addition, plant cells contain plastids that utilize light energy to manufacture carbohydrates in the process of photosynthesis. It is on the large surface area provided by the inner cristae of mitochondria that ATP-generating enzymes are located. Mitochondria are self-replicating, and probably they are the evolutionary descendants of what were once free-living prokaryotes.
线粒体是细胞中化学产能的场所。另外，植物细胞中的质体在光合作用中利用光能产生碳水化合物，线粒体内嵴上提供了很大的表面积并分布着产ATP酶。线粒体自我复制，并且可能是自由生活的原核生物在进化中形成的后代。
There are two types of plastids: leucoplasts, which lack pigments and serve as storage sites for starch, proteins, and oils; and chromoplasts, which contain pigments. The most important chromoplasts are chloroplasts-organelles that contain the chlorophyll used in photosynthesis. The internal structure of chloroplasts includes stacks of membranes called grana, which are embedded in a matrix called the stroma.
质体有两种类型：白色体，缺乏色素，是淀粉，蛋白质和油的储备场所；色质体，含有色素。叶绿体是最重要的色质体，含有与光合作用有关的叶绿素。叶绿体的内部结构是由多层膜形成的叶绿体基粒，其中包埋在基质中的基粒称子座。
The Cytoskeleton（细胞骨架）
All eukaryotic cells have a cytoskeleton, which is a convoluted latticework of filaments and tubules that appears to fill all available space in the cell and provides support for various other organelles. A large portion of the cytoskeleton consists of threadlike microfilaments composed mainly of the contractile protein actin. They are involved in many types of intracellular movements in plant and animal cells. A second protein, myosin, is involve in the contraction of muscle cells. Another main structural component of the cytoskeleton consists of microtubules, which are composed of the globular protein tubulin and together act as scaffolding that provides a stable cell shape. Cytoskeletal intermediate filaments appear to
impart tensile strength to the cell cytoplasm. Mechanoenzymes such as myosin, dynein, and kinesin interact with the cytoskeletal filaments and tubules to generate forces that cause movements.
所有的细胞都有细胞骨架，网络结构的纤丝充满了它所能触及的全部空间并且对细胞器提供支持作用。细胞骨架大部分由微丝组成，微丝主要由可收缩的肌动蛋白组成。动植物细胞的许多种类型细胞内运动与肌动蛋白有关。第二类蛋白是肌球蛋白，它与肌肉细胞的收缩有关。细胞骨架的另一个主要结构成分是微管，由球状的微管蛋白组成，象脚手架一般维持细胞的稳定形态。细胞骨架的中间丝提供了细胞质伸缩动力。机械酶，例如，肌球蛋白，动力蛋白，驱动蛋白与微丝，微管相互作用产生动力而引起细胞运动。
Cellular Movements（细胞运动）
Although the cytoskeleton provides some stability to cells, its microtubules and filaments and their associated proteins enable cells to move by creeping or gliding. Such movements require a solid substrate to which the cell can adhere and can be guided by the geometry of the surface. Some cells also exhibit chemotaxis, the ability to move toward or away from the source of a diffusing chemical.
尽管细胞骨架提供了细胞的某些稳定性，微丝，微管及相关蛋白能使细胞爬行或滑动。这种运动需要固体基质依托并通过表面几何形状的改变而运动。某些细胞具备趋药性，即趋向或逃离扩散开的化学源。
Certain eukaryotic cells can swim freely in liquid environments, propelled by whiplike cilia or flagella. Both cilia and flagella have the same internal structure: nine doublets (pairs of microtubules) are arranged in a ring and extend the length of the cilium or flagellum, and two more microtubules run down the center of the ring. Every cilium or flagellum grows only from the cell surface where a basal body is located. Movement is based on the activities of tiny dynein side arms that extend from one of the microtubules of each doublet.
某些真核细胞能在液体液体中自由运动，由纤毛或鞭毛推动。纤毛和鞭毛具有同样的内部结构：九个双微管环形排列，纵向延伸，环中心是两个或以上微管组成。纤毛或鞭毛从细胞表面的基体出生长，双微管的动力蛋白臂从一侧延伸到另一侧而引起运动。
Nutrients, proteins, and other materials within most plant cells are moved about via cytoplasmic streaming. The process occurs as myosin proteins attached to organelles push against microfilaments arrayed throughout the cell. Microfilaments and microtubules are responsible for almost all major cytoplasmic movements. During cell division, microtubules of the spindle assembled from tubutin subunits near organelles called centrioles move the chromosomes.
大部分植物细胞的营养，蛋白质和其它物质由细胞质流运输。这个过程是由于依附在细胞器上的肌球蛋白反推排列在细胞周围的微丝形成的。绝大部分细胞质运动由微丝和微管完成。在细胞分裂期间，中心粒周围的由微管蛋白亚基装配形成的纺锤体微管移向染色体。
Glossary
cytoplasm （细）胞质
The living contents of a cell bounded externally by the plasmalemma, including an aqueous ground substance (hyaloplasm, cell sap, or cell matrix) containing organelles and various inclusions but excluding the nucleus and visible vacuoles.
cytoskeleton 细胞骨架
Of eukaryotic cells, an internal "skeleton". Its microtubules and other components structurally support the cell, organize and move its inteftial components. The cytoskeleton also helps free-living cells move through their environment.
nucleus 细胞核，核(复数nuclei)
The organelle of the eukaryote cell that contains the chromosomes and hence ultimately controls cellular activity and inheritance through the activity of the genetic material, DNA
chromosome 染色体
A DNA-histone thread residing in the nucleus of a cell. Each chromosome possesses two telomeres and a centromere, and some contain a nucleolus organizer. RNA proteins are invariably associated with the chromosome.
nucleoid 拟核，类核，核质体The DNA-containing area of a prokaryote cell, analogous to the eukaryote nucleus but not membrane bounded.
nucleoli 核仁( 单数nucleolus)
Nuclear structures composed of completed or partially completed ribosomes and the specific parts of chromosomes that contain the infon-nation for their construction. nuclear envelope 核膜，核被膜
A double membrane (two lipid bilayers and associated proteins) that is the outermost portion of a cell nucleus.
ribosome 核糖体
Small structures composed of two protein and ribonucleic acid subunits involved in the assembly of proteins from amino acids. polysome 多核糖体Of protein synthesis, several ribosomes all translating the same messenger RNA molecule,one after the other.
endoplasmic reticulum 内质网Folded membranes and tubes throughout the eukaryotic cell that provide a large surface upon which chemical activities take place. Golgi complex 高尔基复合体A stack of flattened, smooth, membranous sacs; the site of synthesis and packaging of certain molecules in eukaryotic cells. vacuole 液泡
Storage container within the cytoplasm of a cell having a surrounding membrane. phagocytosis 吞噬作用
The process by which the cell wraps around a particle and engulfs it.
pinocytosis胞饮作用
The process by which a cell engulfs some molecules dissolved in water
lysosome 溶酶体A specialized organelle that holds a mixture of hydrolytic enzymes.
mitochondrion 线粒体(复数mitochondria )A membranous organelle
resembling a small bag with a larger bag resembling a small bag with a larger bag inside that is folded back on itself; serves as the site of aerobic cellular respiration. plastid 质体
An organelle present in all plants except bacteria, blue-green algae, and fungi; it is enclosed by two membranes (the envelope) and has various functions
chloroplast 叶绿体
A plastid in which photosynthesis is carried out. Chloroplasts occur in all photosynthetic organisms except photosynthetic bacteria blue-green algae.
stroma 基质，子座（复数stromata）
Region within a chloroplast that has no chlorophyll.
microfilament 微丝，纤丝
Long, fiberlike structures made of protein and found in cells, often in close association with the microtubules; provide structural support and enable movement.
actin 肌动蛋白
A globular contractile protein. In muscle cells, actin interacts with another protein, myosin, to bring about contraction.
myosin ['maiesin] 肌球蛋白
A protein that, with actin, constitutes the principal element of the contractile apparatus of muscle.
microtubute 微管
Small, hollow tubes of protein that function throughout the cytoplasm to provide structural support and enable movement. tubulin 微管蛋白
A protein that is the major constituent of microtubules.
dynein 动力蛋白，动素
A group of at least four distinct proteins found in the flagella and microtubules of eukaryotic cells and possessing ATPase activity.
chemotaxis 趋化性
A locomotory movement of an organism or cell in response to, and directed by, an directional stimulus.
cilia 纤毛
Numerous short, hairlike structures projecting from the cell surface that enable locomotion. flagella 鞭毛(单数flagellum) Long, hairlike structures projecting from the cell surface that enable locomotion.
basal body基体
A body identical in structure to a centriole, found always at the base of a cilium or eukaryote flagellum.
centriole 中心粒
An organelle located close to the nucleus in most animal and lower plant cells but absent from prokaryotes and higher plants.
Lesson Two（2学时）
Photosynthesis
Photosynthesis occurs only in the chlorophyll-containing cells of green plants, algae, and certain protists and bacteria. Overall, it is a process that converts light energy into chemical energy that is stored in the molecular bonds. From the point of view of chemistry and energetics, it is the opposite of cellular respiration. Whereas cellular respiration is highly exergonic and releases energy, photosynthesis requires energy and is highly endergonic.
光合作用只发生在含有叶绿素的绿色植物细胞，海藻，某些原生动物和细菌之中。总体来说，这是一个将光能转化成化学能，并将能量贮存在分子键中，从化学和动能学角度来看，它是细胞呼吸作用的对立面。细胞呼吸作用是高度放能的，光合作用是需要能量并高吸能的过程。
Photosynthesis starts with CO2 and H2O as raw materials and proceeds through two sets of partial reactions. In the first set, called the light-dependent reactions, water molecules are split (oxidized), 02 is released, and ATP and NADPH are formed. These reactions must take place in the presence of light energy. In the second set, called light-independent reactions, CO2 is reduced (via the addition of H atoms) to carbohydrate. These chemical events rely on the electron carrier NADPH and ATP generated by the first set of reactions.
光合作用以二氧化碳和水为原材料并经历两步化学反应。第一步，称光反应，水分子分解，氧分子释放，ATP和NADPH形成。此反应需要光能的存在。第二步，称暗反应，二氧化碳被还原成碳水化合物，这步反应依赖电子载体NADPH以及第一步反应产生的ATP。
Both sets of reactions take place in chloroplasts. Most of the enzymes and pigments for the lightdependent reactions are embedded in the thylakoid membrane of chloroplasts. The dark reactions take place in the stroma.
两步反应都发生在叶绿体中。光反应需要的大部分酶和色素包埋在叶绿体的类囊体膜上。暗反应发生在基质中。
How Light Energy Reaches Photosynthetic Cells（光合细胞如何吸收光能的）The energy in light photons in the visible part of the spectrum can be captured by biological molecules to do constructive work. The pigment chlorophyll in plant cells absorbs photons within a particular absorption spectrums statement of the amount of light absorbed by chlorophyll at different wavelengths. When light is absorbed it alters the arrangement of electrons in the absorbing molecule. The added energy of the photon boosts the energy condition of the molecule from a stable state to a less-stable excited state. During the light-dependent reactions of photosynthesis, as the absorbing molecule returns to the ground state, the "excess" excitation energy is transmitted to other molecules and stored as chemical energy.
生物分子能捕获可见光谱中的光能。植物细胞中叶绿素在不同光波下吸收部分吸收光谱。在吸收分子中，光的作用使分子中的电子发生重排。光子的能量激活了分子的能量状态，使其从稳定态进入不稳定的激活态。
All photosynthetic organisms contain various classes of chlorophylls and one or more carotenoid(accessory) pigments that also contribute to photosynthesis. Groups of pigment molecules called antenna complexes are present on thylakoids. Light striking any one of the pigment molecules is funneled to a special chlorophyll a molecule, termed a reaction-center chlorophyll, which directly participates in photosynthesis. Most photosynthetic organisms possess two types of reaction-center chlorophylls, P680 and P700, each associated with an electron acceptor molecule and an electron donor. These aggregations are known respectively as photosystem Ⅰ(P700) and photosystem Ⅱ(P680).
所有的光合作用生物含有不同等级的叶绿素和一个或多个类胡萝卜素（光合作用的辅助色素）。称作天线复合体的色素分子群存在于类囊体中。激活色素分子的光能进入叶绿素
反应中心，其直接参与光合作用。大部分光反应细胞器拥有两套反应中心，P680和P700，每个光系统都含有一个电子受体和电子供体。这些集合体就是大家熟识的光合系统Ⅰ和光合系统Ⅱ。
The Light-Dependent Reaction: Converting Solar Energy into Chemical-Bond Energy
光反应：光能转化成化学键能
The photosystems of the light-dependent reactions are responsible for the packaging of light energy in the chemical compounds ATP and NADPH. This packaging takes place through a series of oxidation reduction reactions set in motion when light strikes the P680 reaction center in photosystem Ⅱ. In this initial event water molecules are cleaved, oxygen is released, and electrons are donated. These electrons are accepted first by plastoquinone and then by a series of carriers as they descend an electron transport chain. For each four electrons that pass down the chain, two ATPs are formed. The last acceptor in the chain is the P700 reaction center of photosystem Ⅰ. At this point incoming photons boost the energy of the electrons, and they are accepted by ferredoxin. Ferredoxin is then reoxidized, and the coenzyme NADP+ is reduced to the NADPH. The ATP generated previously and the NADPH then take part in the light independent reactions.
光反应的光系统将光能转化成化学复合物ATP和NADPH。当光激活光系统Ⅱ的光反应中心时，通过一系列的氧化还原反应实现能量的传递。反应开始时，水被分解，氧被释放并提供电子。电子首先传递给质体醌，然后通过一系列载体形成的电子传递链。每传递4个电子，形成2个ATP。最后一个受体存在于光反应系统Ⅰ的反应中心里。此处光子激活电子，电子传递给铁氧还蛋白。铁氧还蛋白再氧化，并且辅酶NADP+还原成NADPH。早期产生的ATP和NADPH进入暗反应。
The production of ATP from the transport of electrons excited by light energy down an electron transport chain is termed photophosphorylation. The one-way flow of electrons through photosystems II and I is called noncyclic photophosphorylation; plants also derive
additional ATP through cyclic photophosphorylation, in which some electrons are shunted back through the electron transport chain between photosystems Ⅱand Ⅰ.
由电子传递链偶连产生ATP的过程称为光合磷酸化。通过光合系统Ⅱ流经光合系统Ⅰ的电子路径称非循环式光合磷酸化；植物通过循环式光合磷酸化获得额外的ATP，一些电子在光合系统Ⅰ和Ⅱ之间的电子传递链中回流。
The Light-Independent Reactions: Building Carbohydrates
暗反应：碳水化合物的形成
In the light-independent reactions of photosynthesis, which are driven by ATP and NADPH, C02is converted to carbohydrate. The reactions are also known as the Calvin-Benson cycle. Atmospheric CO2, is fixed as it reacts with ribulose biphosphate (RuBP), a reaction that is catalyzed by the enzyme ribulose biphosphate carboxylase. The reduction Of C02to carbohydrate (fructose diphosphate) is completed via several more steps of the cycle. Finally, RUBP is regenerated so that the cycle may continue.
由ATP和NADPH驱动的暗反应中，二氧化碳转化成碳水化合物。即卡尔文循环。二磷酸核酮糖固定二氧化碳，由二磷酸核酮糖羧化酶催化。
Oxygen: An Inhibitor of photosynthesis（氧：光合作用的抑制因子）
High levels of oxygen in plant cells can disrupt photosynthesis and can also cause photorespiration-an inefficient fun of the dark reactions in which 02 is fixed rather than C02 and no carbohydrate is produced.
Reprieve from Photorespiration: The C4 Pathway
Most plants are C3 plants; they experience decreased carbohydrate production under hot, dry conditions as a result of the effects of photorespiration. Among C4 plants, however, special leaf anatomy and a unique biochemical pathway enable the plant to thrive in and conditions. Thus C4plants lessen photorespiration by carrying out photosynthesis only in cells that are insulated from high levels of CO2. They also possess a novel mechanism for carbon fixation.
大部分植物是碳3植物，在高温干旱条件下，由于光呼吸作用而使碳水化合物的合成降低。而在大多数的碳4植物中，由于叶脉的特殊构造和独特的化学路径使植物依然很茂盛。这是碳固定的一个新机制。
Glossary
light-dependent reactions 光反应-
The first stage in photosynthesis, driven by light energy. Electrons that trap the sun's energy pass the energy to high-energy carriers such as ATP or NADPH, where it is stored in chemical bonds.
light-independent reactions 暗反应
The second stage of photosynthesis, also called the Calvin-Benson cycle, which does not require light. During the six steps of the cycle, carbon is fixed and carbohydrates are formed.
chloroplast 叶绿体
A plastid in which photosynthesis is carried out. Chloroplasts occur in all photosynthetic organisms except photosynthetic bacteria and blue-green algae.
absorption spectrum 吸收光谱，吸收谱The spectrum obtained when radiation (light, ultraviolet radiation, etc.) from a source giving a continuous spectrum is passed through a substance.
Calvin-Benson cycle 卡尔文·本森循环Cyclic reactions that are the "synthesis" part of the light-independent reactions of photosynthesis. In land plants, RUBP, or some other compound to which carbon has been affixed, under goes rearrangements that lead to formation of a sugar phosphate and to regeneration of the RUBP. The cycle runs on ATP and NADPH from light-dependent reactions.
carotenoid 类胡萝卜素
Light-sensitive, accessory pigments that transfer absorbed energy to chlorophylls. They absorb violet and blue wave-lengths but transmit red, orange, and yellow. chlorophyll 叶绿素
The green substance of plants by which
photosynthesis is accomplished; it is
usually localized in intracellular organelles
called chloroplasts.
cyclic photophosphorylation
环形光合磷酸化（作用）
Cyclic photophosphorylation is coupled to cyclicelectron flow, in which ATP is the only product.
C3 plant 三碳植物
A plant in which the light-independent reactions of photosynthesis start with a threecarbon compound. Most plants are C3 plants.
C4 plant 四碳植物
A plant such as corn in which the light independent reactions of photosynthesis star with a four-carbon compound.
noncyclic photophosphorylation
非环形光合磷酸化作用Noncyclic photophosphorylation is coupled to noncyclic electron flow, the electrons being used to reduce NADP+ as well as to make ATP.
photon 光子
A particle that has zero mass or charge and unit spin, the quantum of the electromagnetic field and carrier of the electromagnetic force. photophosphorylation 光合磷酸化作用The synthesis of ATP from phosphate and ADP during photosynthesis, using light energy.
photorespiration 光呼吸
A light-dependent type of respiration that occurs in most photosynthetic plants and differs from normal (or dark) respiration. photosynthesis 光合作用
The synthesis of organic compounds by reduction of carbon dioxide using light energy absorbed by chorophyll.
photosystem 光合系统
One of the clusters of light-trapping pigments embedded in photosynthetic membranes. Photosystem I operates during the cyclic pathway; photosystem Ⅱoperates during both the cyclic and noncyclic pathways. ribulose biphosphate(RUBP)核酮糖二磷酸
A compound with a backbone of five carbon atoms that is required for carbon fixation in the Calvin-Benson cycle of photosynthesis.
thylakoid 类囊体
One of a number of flattened fluid-filled sacs that form the photosynthetic lamellar system of chloroplasts, photosynthetic bacteria, and blue-green algae.
Lesson Three（2学时）
Cellular Reproduction: Mitosis and Meiosis
The Nucleus and Chromosomes
The cell nucleus is the main repository of genetic information. Within the nucleus are the chromosomes tightly coiled strands of DNA and clusters of associated proteins. Long stretches of the continuous DNA molecule wind around these clusters of proteins, or histones, forming beadlike complexes known as nucleosomes. More coiling and supercoiling produces a dense chromosome structure. Each long strand of DNA combines with histones and nonhistone proteins to make up the substance chromatin.
细胞核是贮藏遗传信息的主要场所。DNA盘绕成螺旋线以及相关的成簇蛋白质。DNA 螺旋线缠绕成簇的组蛋白形成珠链状的核小体。这些螺旋和超螺旋形成致密的染色体组结构。每个长链DNA与组蛋白和非组蛋白一起构成染色质物质。
A pictorial display of an organism's chromosomes in the coiled, condensed state is known as a karyotype. Karyotype reveal that in most cells all but sex chromosomes are present as two copies, referred to as homologous pairs. Non-sex chromosomes are called autosomes. Organisms whose cells contain two sets of parental chromosomes are called diploid; those with cells containing a single set of parental chromosomes are called haploid.
染色体致密的超螺旋状态我们称染色体组。除了性染色体外，大多数细胞的染色体组成对出现，称同源染色体对。非性染色体称常染色体。生物细胞含有两套父母本染色体的称二倍体；含有单套染色体的称单倍体。
The Cell Cycle
The cell cycle is a regular sequence in which the cell grows, prepares for division, and divides to form two daughter cells, each of which then repeats the cycle. Such cycling in effect
makes single-celled organisms immortal. Many cells in multicellular organisms, including animal muscle and nerve cells, either slow the cycle or break out of it altogether.
在细胞生长过程中，细胞循环遵循特定程序，分裂准备，分裂成2个子细胞，子细胞再循环。此循环使得单细胞永生。多细胞生物中的许多细胞，包括动物肌肉和神经细胞，要么降低循环速度，要么同时分裂。
The normal cell cycle consists of four phases. The first three include G1, the period of normal metabolism; S phase, during which normal synthesis of biological molecules continues, DNA is replicated, and histones are synthesized; and G2, a brief period of metabolism and additional growth. Together the G1, S, and G2 phases are called interphase. The fourth phase of the cell cycle is M phase, the period of mitosis, during which the replicated chromosomes condense and move and the cell divides. It is believed that properties of the cell cytoplasm control the cell cycle, along with external stimulators and inhibitors such as chalones.
正常细胞循环由4个时期组成。头三期包括G1,正常新陈代谢；S期,正常新陈代谢同时，DNA 复制，组蛋白合成；G2 期，短期的新陈代谢和少许生长。G1, S, 和G2称分裂间期。最后是M期，有丝分裂期，复制的染色体组浓缩，移动并细胞分裂。据称是染色质控制了细胞循环，伴随外部激活因子和抑制因子如抑素。
Mitosis: Partitioning the Hereditary Material
Biologists divide the mitotic cycle into four phases. At the beginning of prophase the chromosomes each consist of two highly condensed chromatids attached to each other at a centromere. As prophase ends and metaphase begins, the condensed chromosomes become associated with the spindle. Eventually the chromosomes become arranged in a plane (called the metaphase plate) at a right angle to the spindle fibers. Next, during anaphase, the two sister chromatids of each chromosome split, and one from each pair is drawn toward each pole of the cell. During telophase nuclear envelopes begin to form around each set of chromosomes, and division of the cytoplasm takes place.
生物学家将有丝分裂划分为4个阶段。分裂前期，高度浓缩的两个染色单体通过着丝粒连接在一起。在分裂前期后期和分裂中期前期，浓缩的染色体与纺锤体相连，最后以正确的角度排列在赤道板上。在分裂后期，两个姊妹单体分离，分别拽向细胞两极。在分裂末期，在每套染色体周围形成核膜，细胞质发生分裂。
As mitosis proceeds, the spindle microtubules play a crucial role in ensuring that both paired and separated chromatids move in the right directions at the proper times. Each half of the spindle forms as microtubules extend from each pole of a dividing cell to the region of the metaphase plate. During prophase, other microtubules, the centromeric fibers, extend outward from the spindle poles to structures on the chromosomes called kinetochores. During anaphase the fibers begin to shorten, and the chromatids begin to move apart.
在有丝分裂过程中，是纺锤体微管确保了染色单体在适当时间以正确方向进行分离。纺锤体微管由两极向赤道板延伸。在分裂前期，其它微管，着丝粒纤维延伸到染色体的动粒。在分裂后期，纤维开始变短，染色单体分离。
The spindle forms differently in plant and animal cells. In animals it is associated with centriole, while in plant and fungal cells spindle formation is associated with reions called microtubule organizing centers.
植物和动物细胞形成的纺锤体不同。动物细胞与中心粒相连，而在植物和真菌细胞中，纺锤体与微管组织中心的离子相连。
Cytokinesis: Partitioning the Cytoplasm
胞质分裂：细胞质分离
The division of the cell cytoplasm at the end of mitosis is called cytokinesis. In animal cells it takes place as a ring of actin filaments contracts around the cell equator, pinching the cell in two. In plant cells, which are bounded by a cell wall, cytokinesis involves the building of a
new cell plate across the dividing cell at its equator. Cell wall material is then deposited in the region of the cell plate.
在动物细胞中，环形肌动蛋白丝延赤道板收缩而使细胞一分为二。在植物细胞中，在赤道板形成新的细胞板。
Meiosis: The Basis of Sexual Reproduction
Meiosis is a special form of cell division that takes place in the reproductive organs that produce sex cells. Like mitosis, it takes place after DNA replication has occurred and involves two sequential nuclear divisions (meiosis I and meiosis Ⅱ). These divisions result in four daughter cells, each with half the number of chromosomes of the parent cell. The phenomenon of crossing over during meiosis results in exchanges of genetic information between chromosomes. Hence, the homologous chromosomes distributed to different progeny cells are not identical.
减数分裂是性细胞分裂的特殊形式。如有丝分裂，它也是发生在DNA复制后并有连续的两个核分裂。产生4个子细胞，分别含有亲本一半的染色体数。
As in mitosis two chromatids exist for each chromosome at the beginning of prophase 1. During this phase the homologous chromosomes undergo synapsis, or pairing, which is brought about by a bridging structure of proteins and RNA called the synaptonemal complex. The homologous pairs stay together when they align on the metaphase plate. Unlike the anaphase of mitosis, however, during anaphase I the two chromatids of each chromosome stay joined at the centromere and move together to one of the two poles of the cell. It is this event that results in the halving of the chromosome number in the four daughter cells that result from meiosis.
正如在有丝分裂中一样，两个同源染色单体通过蛋白质和RNA桥配对形成联会复合体。与有丝分裂不同的是，每组染色体的两个染色单体连接在着丝点上并一起移向细胞两极的一级。由此而导致4个子细胞染色体数减半。
一、表示数量的词素 1. haplo,mono,uni ：单，一，独haploid 单倍体monoxide一氧化碳monoatomic单原子的 2. bi,di,dipl,twi,du :：二，双，两，偶biocolor 双色,dichromatic 双色的,diplobacillus 双杆菌dikaryon 双核体 twin ：孪生dual 双重的 3. tri :三，丙triangle三角triacylglycerol三酰甘油tricarboxylic acid cycle 三羧酸循环 4. quadri,quadru,quart,tetr,tetra：四quadrilateral四边的quadrivalent四价的quadruped 四足动物tetrode四极管tetracycline四环素 5. pent,penta,quique五pentose戊糖pentagon五角形pentane戊烷quintuple 五倍的pentose戊糖pentomer五邻粒 6. hex,hexa,sex 六hexose已糖hexapod六足动物hexapoda昆虫纲hexamer六聚体 7. hepta,sept 七heptane 庚烷heptose 庚糖heptoglobin七珠蛋白 8. oct八octpus 章鱼octagon八角形octane 辛烷octase 辛糖 9. enne,nona九nonapeptide 九肽enneahedron 九面体 10. deca,deka 十:decapod 十足目动物decahedron 十面体decagram 十克 11. hecto, 百hectometer百米hectoliter百升hectowatt 百瓦 12. kilo,千kilodalton (KD) 千道尔顿kilobase 千碱基kiloelectron volt 千电子伏特 13. deci,十分之一，分decimeter 分米decigram 十分之一克 14. centi,百分之一 15. milli,千分之一，毫millimole 毫摩（尔）milliliter 毫升 16. micro,百万分之一，微，微小，微量microgram微克microogranism微生物microecology 微生态学micropipet微量移液器 17. nano十亿分之一，毫微，纳nanosecond十亿分之一秒nanometer纳米 18. demi,hemi,semi半demibariel 半桶hemicerebrum 大脑半球semiopaque半透明semi-allel半等位基因semi-conductor半导体 19. holo 全，整体，完全holoenzyme 全酶holoprotein全蛋白holocrine全（质分）泌 20. mega巨大，兆，百万megaspore大孢子，megabasse兆碱基megakaryocyte巨核细胞megavolt兆伏megalopolitan特大城市 21. macro 大，巨大，多macrophage巨噬细胞macrogamete大配子macroelement常量元素macromolecular大分子 22. poly,multi,mult 多，复合polyacrylate聚丙烯酸酯polymerase 聚合酶multichain多链的multinucleate 多核的multicistronic mRNA多顺反子mRNA multicopy多拷贝 二、表示颜色的词素 1 chrom颜色 chromophore生色团chromosome染色体chromatography色谱法 2 melan,melano,nigr 黑 melanoma黑素瘤melanin黑色素melanophore黑色素细胞 3 xantho,flavo,fla,flavi,lute黄 xanthophyl叶黄素xanthous黄色的，黄色人种xathine黄嘌呤flavin黄素flavone黄酮letein黄体素，叶黄素flavin adenine dinucleotide(FAD)黄素腺嘌呤二核苷酸 4 erythro, rub, rubrm, ruf,红 erythrocyte红细胞erythromycin红霉素erythropoitin(EPO)促红细胞生成素 5 chloro,chlor绿，氯
常用英语前缀、后缀、词根表 一、英语常用前缀表 （说明：黑体字为英语前缀及其含义，斜杠/后面为构词举例）a- 使，离，向/ awake使醒来，apart使分离 ac-，ad-，af-，ag-，al- 向，加强/ accord依照，affect影响anti- 反，防止/ antitank反坦克的 auto- 自，自动/ automation自动化 de- 离，加强，降/ detrain下火车，depicture描述 dis- 否，离，安全/ disallow不准，disroot根除，disarrange 搞乱 dif- 分开，否定/ differ差异，difficult困难 be- 在，使/ beside在……旁，befall降临（于） bi- 双/ bicycle自行车，bisexual两性的 co- 共同，互相/ cn- exist共存 com-，con- 共同，加强/combine联合，confirm使加强 e- ,ex- 出，否定，加强/ educe引出，estop阻止，expand扩展 en-，em- 在内，用于，使/ encage关入笼，embed使插入in- ，im-，il- 无，向内，加强/ incorrect不正确，impulse 冲动 inter- 在……间/ international国际的 kilo- 千/ kilometer千米 micro- 微/ microbe微生物 mini- 微小/ minibus小公共汽车 neg- 不，非/ neglect忽视，negate否定 non- 不，非/ nonparty非党派的 ob-，oc-，op- 越过，包围，逆反/ object目标，oppose反抗out- 在外，除去/ outlaw逃亡者，outroot根除 over- 超出，反转/ overweight超重，overthrow推翻 per- 贯通，遍及/ perform完成，perfect完美的 post- 在后/ postwar战后的，porstern后门 pre- 在前/ preface前言 pro- 在前，拥护/ prologue序言，pro- American亲美的 re- 重复，相反/ recall回忆，react反应 se- 分离/ separate使分离，select选出 sub-，suc-，sug- 在下，次于/ subway地铁，succeed继承sur- 超，外加/surface表面，surtax附加税 tele- 远/ television电视 trans- 超过，透过/ translate翻译，transport运输 un- 否定/ unfair不公平的 up- 向上/ upset推翻，upstairs在楼上 uni- 单一/ united联合的，unit单位二、英语常用后缀表 （说明：黑体字为英语后缀及其含义，斜杠/后面为构词举例） -ability，—ibility 抽象名词/ stability稳定，sensibility敏感性 -able，—ible 能…的/ unable无能力的，terrible可怕的-acy性质，状态/ illiteracy文盲，intricacy错综复杂 -age动作，状态，总称（构成名词）/ folwage泛滥，postage 邮费 -al动作，行为，…的/ manual手册，central中心 -an人，籍贯，…的/ African非洲的，publican旅店主 -ance，—ancy行为，性质，状态/ distance距离，currency 流通 -ant，ent人，…的/ assistant助手,excellent优秀的 -ary地点，人，事物/ library图书馆，military军事 -ate做，职位，…的/ doctorate博士学位，adequate足够的-ation，-ition动作，性质，状态/ visitation访问,addition附加物 -craft 技巧，工艺/ aircraft飞机，handicraft手艺 -cy 形状，状态，职位/ secrecy秘密，fancy幻想 -dom 状态，领域/freedom自由，kingdom王国 -ed 有…的/ cultured有教养的，puzzled迷惑的 -ence，-ency 行为，性质，状态/ difference差异，frequency 频率 -er，—eer，—or人/ killer杀手，engineer工程师，doctor 医生 -ern 地点，方位/ eastern东方的，cavern洞穴 -ese 人，语言，国籍/ Chinese中国人，Japanese日本人-ess 女性，雌性/ actress女演员 -hood 状态，身份（构成名词）/ childhood童年，livelihood 生计 -ic 学术，职业，……的/ music音乐，atomic原子的 -ice 人，抽象名词/ service服务，novice新手 -ics 学术（构成名词）/ physics物理学，optics光学 -ing 总称，抽象名词/ clothing衣服，building建筑，feeling 感觉 -ion 物品，抽象名词/ cushion座垫，expression表达 -ism 主义，宗教/ Marxism马克思主义，Islamism伊斯兰教 -ist …者（构成名词）/ communist共产主义者，dentist 牙医 -ive 人，物，…的/ native本地人，attractive有吸引力的
生物专业英语词汇——词素（词根）部分 一、表示数量的词素 1. haplo,mono,uni ：单，一，独haploid 单倍体monoxide一氧化碳monoatomi c单原子的 2. bi,di,dipl,twi,du :：二，双，两，偶biocolor 双色,dichromatic 双色的,diplobacillus 双杆菌dikaryon 双核体 twin ：孪生dual 双重的 3. tri :三，丙triangle三角triacylglycerol三酰甘油tricarboxylic acid cycle 三羧酸循环 4. quadri,quadru,quart,tetr,tetra：四quadrilateral四边的quadrivalent 四价的quadruped四足动物tetrode四极管tetracycline四环素 5. pent,penta,quique五pentose戊糖pentagon五角形pentane戊烷quintuple 五倍的pentose戊糖pentomer五邻粒 6. hex,hexa,sex 六hexose已糖hexapod六足动物hexapoda昆虫纲hexamer六聚体 7. hepta,sept(i) 七heptane 庚烷heptose 庚糖heptoglobin七珠蛋白 8. oct八octpus 章鱼octagon八角形octane 辛烷octase 辛糖 9. enne,nona九nonapeptide 九肽enneahedron 九面体 10. deca,deka 十:decapod 十足目动物decahedron 十面体decagram 十克 11. hecto, 百hectometer百米hectoliter百升hectowatt 百瓦 12. kilo,千kilodalton (KD) 千道尔顿kilobase 千碱基kiloelectron
教学内容： Cytoplasm: The Dynamic, Mobile Factory 细胞质：动力工厂 Most of the properties we associate with life are properties of the cytoplasm. Much of the mass of a cell consists of this semifluid substance, which is bounded on the outside by the plasma membrane. Organelles are suspended within it, supported by the filamentous network of the cytoskeleton. Dissolved in the cytoplasmic fluid are nutrients, ions, soluble proteins, and other materials needed for cell functioning. 生命的大部分特征表现在细胞质的特征上。细胞质大部分由半流体物质组成，并由细胞膜（原生质膜）包被。细胞器悬浮在其中，并由丝状的细胞骨架支撑。细胞质中溶解了大量 的营养物质，离子，可溶蛋白以及维持细胞生理需求的其它物质。 The Nucleus: Information Central（细胞核：信息中心） The eukaryotic cell nucleus is the largest organelle and houses the genetic material (DNA) on chromosomes. (In prokaryotes the hereditary material is found in the nucleoid.) The nucleus also contains one or two organelles-the nucleoli-that play a role in cell division. A pore-perforated sac called the nuclear envelope separates the nucleus and its contents from the cytoplasm. Small molecules can pass through the nuclear envelope, but larger molecules such as mRNA and ribosomes must enter and exit via the pores. 真核细胞的细胞核是最大的细胞器，细胞核对染色体组有保护作用（原核细胞的遗传物质 存在于拟核中）。细胞核含有一或二个核仁，核仁促进细胞分裂。核膜贯穿许多小孔，小 分子可以自由通过核膜，而象mRNA和核糖体等大分子必须通过核孔运输。 Organelles: Specialized Work Units（细胞器：特殊的功能单位） All eukaryotic cells contain most of the various kinds of organelles, and each organelle performs a specialized function in the cell. Organelles described in this section include ribosomes, the endoplasmic reticulum, the Golgi complex, vacuoles, lysosomes, mitochondria, and the plastids of plant cells. 所有的真核细胞都含有多种细胞器，每个细胞器都有其特定功能。本节主要介绍核糖体， 内质网，高尔基体系，液泡，溶酶体，线粒体和植物细胞中的质体。 The number of ribosomes within a cell may range from a few hundred to many thousands. This quantity reflects the fact that, ribosomes are the sites at which amino acids are assembled into proteins for export or for use in cell processes. A complete ribosome is composed of one larger and one smaller subunit. During protein synthesis the two subunits move along a strand of mRNA, "reading" the genetic sequence coded in it and translating that sequence into protein. Several ribosomes may become attached to a single mRNA strand; such a combination is called a polysome. Most cellular proteins are manufactured on ribosomes in the cytoplasm. Exportable proteins and membrane proteins are usually made in association with the endoplasmic reticulum. 核糖体的数量变化从几百到几千，核糖体是氨基酸组装成蛋白质的重要场所。完整的核 糖体由大亚基和小亚基组成。核糖体沿着mRNA移动并阅读遗传密码，翻译成蛋白质。一条mRNA上可能有多个核糖体，称多聚核糖体。大多数细胞蛋白是由细胞质中核糖体生产。输出蛋白和膜蛋白通常与内质网有关。 The endoplasmic reticulum, a lacy array of membranous sacs, tubules, and vesicles, may be either rough (RER) or smooth (SER). Both types play roles in the synthesis and transport of proteins. The RER, which is studded with polysomes, also seems to be the source of the
英语常见词根总汇 1. abol = to do away with废除 abolish废除 2. ab-sum = not present离开 absent不在 3. abyssys = bottom底 abyss深渊 4. ac = an oak栎属植物 acorn橡树子 5. acer = a field原野 acre英亩 6. acer = sharp尖锐的 acerbity酸 7. acidus = sour发酸 acid酸 8. acu = sharpen削尖 acumen敏锐 9. aedes = a house住宅 edifice屋宇 10. aequus = equal相等的 equal平等的 11. aer = air空气 aerate充气 12. aer = before以前 ere在…之前 13. aesth = feel发觉 aesthete审美家 14. aestimo = to value估价 esteem尊重 15. aeternus = of endless duration永久的 eternity永恒 16. aevum = age年龄 coeval同年代的 17. afen = evening晚上 eve黄昏 18. afre = always永远 ever永远 19. ag = act行动 agency力量 20. agan = to own承认 owe感谢 21. aggelos = a messenger通信员 angel天使 22. agger = heap堆积 exaggerate夸大 23. ago = lead引导 pedagog教师 24. ago = to do做 agile敏捷的 25. agon = contest争夺 agonal濒死 26. agr = field原野 agrarian土地的
英语常见词根总汇(01) 1. abol = to do away with废除abolish废除 2. ab-sum = not present离开absent不在 3. abyssys = bottom底abyss深渊 4. ac = an oak栎属植物acorn橡树子 5. acer = a field原野acre英亩 6. acer = sharp尖锐的acerbity酸 7. acidus = sour发酸acid酸 8. acu = sharpen削尖acumen敏锐 9. aedes = a house住宅edifice屋宇 10. aequus = equal相等的equal平等的 11. aer = air空气aerate充气 12. aer = before以前ere在…之前 13. aesth = feel发觉aesthete审美家 14. aestimo = to value估价esteem尊重 15. aeternus = of endless duration永久的eternity永恒 16. aevum = age年龄coeval同年代的 17. afen = evening晚上eve黄昏 18. afre = always永远ever永远 19. ag = act行动agency力量 20. agan = to own承认owe感谢 21. aggelos = a messenger通信员angel天使 22. agger = heap堆积exaggerate夸大 23. ago = lead引导pedagog教师 24. ago = to do做agile敏捷的 25. agon = contest争夺agonal濒死 26. agr = field原野agrarian土地的 27. aither = burn烧ether太空 28. alb = white白的alb白长袍 29. ali = another又一alias别名
kidney [英文] 肾 ren- [拉] 肾renal adj.肾的 renal duct 输尿管(ureter) renal function test (= kidney function test) 肾功能试验renal calculus 肾结石 nephr(o)- [希] (prefix) 肾nephric adj.肾的( 同renal) nephric duct 肾管 nephritis n. 肾炎(nephritic adj.肾炎的) nephritic calculus 肾结石(同renal calculus ) heart [ 英文] 心 cardi(o)- [希] (prefix) 心cardiac- adj. 心的cardiac muscle 心肌 cardiac output 心输出量 cardioacceleratory adj.心动加速的 lung [英文] 肺 pulmo [拉] pulmo- [ pulmon(o)-] (prefix)肺pulmonary adj. 肺的 pulmogram n. 肺部造影片 pulmonology n.肺病学 - in (suffix)蛋白 actin n. 肌动蛋白, 肌纤蛋白 myosin n. 肌球蛋白 troponin n. 肌原蛋白 dys-, dis- [拉] (prefix) 坏的；有病的；困难的dysfunction机能不良，功能紊乱 dysphonia 发声困难, 言语障碍 dysgraphia 书写困难 dys-, dis- [希] (prefix) 相反；反对；抵抗antioxidant抗氧化剂 antibody 抗体 antiallergic 抗变应性的
A band A带 A chromosome A染色体[二倍体染色体组中的正常染色体（不同于B染色体）] A site[核糖体]A部位 ABA脱落酸abasic site脱碱基位点，无碱基位点 abaxial远轴的 abequose阿比可糖，beta脱氧岩藻糖 aberrant splicing异常剪接 aberration象差；畸变；失常 abiogenesis自然发生论，无生源论 ablastin抑殖素（抑制微生物细胞分裂或生殖的一种抗体） abnormal distrbution非正态分布 abnormality异常，失常；畸形，畸变 ABO blood group systemABO血型系统 aboriginal mouse原生鼠 abortin流产素 abortion流产，败育 abortive egg败育卵 abortive infection流产（性）感染 abortive transduction流产（性）转导 ABP肌动蛋白结合蛋白 abrin相思豆毒蛋白 abscisic acid脱落酸 abscission脱落 absolute绝对的 absolute configuration绝对构型 absolute counting绝对测量 absolute deviation绝对偏差 absolute error绝对误差 absorbance吸收，吸光度 absorbed dose吸收剂量 absorbent吸收剂 absorptiometer吸光计 absorptiometry吸光测定法 absorption吸收 absorption band吸收谱带 absorption cell吸收池 absorption coefficient吸收系数 absorption spectroscopy吸收光谱法 absorption spectrum吸收光谱；吸收谱 absorptive endocytosi s吸收（型）胞吞（作用） absorptive pinocytosis吸收（型）胞饮（作用） absorptivity吸光系数；吸收性 abundance丰度 abundant丰富的，高丰度的
生物专业英语试题及答案 一、将下列英文术语或缩写译为合乎学术规范的中文术语： 1、Odorant receptor 气味受体（气味感受器、嗅觉受体、嗅觉感受器也得1分；仅答受体或感受器，则得0.5分）。 2、Differentially expressed gene 差异化表达基因（答为“不同表达基因”，仅得0.5分）。 3、MOE 主要嗅（觉）上皮[答为“嗅（觉）上皮”也得1分；若写出其英文术语全称“Main olfactory epithelium”，也得 分]。 4、VNO4 犁鼻器（答为“信息素外周感受器”也得1分；若写出其英文术语全称“Vomeronasal organ”，也得分）。 5、Social behavior 社会行为（答为“社群行为、社交行为”也得1分）。 6、Monogamy 一夫一妻制（答为“一雄一雌制、单配制”也得1分） 7、Vasopressin 加压素（答为“抗利尿素”仅得0.5分）。 8、Oxytocin 催产素。 9、Kin recognition 亲属识别。 10、Autism
自闭症/孤独症。 11、NIH (美国)国家(立)卫生研究院(所)(若写出其英文术语全称NIH = National Institutes of Health 也得分)。 12、HHMI 霍华德·休斯医学研究所(若写出其英文术语全称HHMI = Howard Hughes Medical Institute 也得分；或者译为Howard Hughes 医学研究所，也得全分)。 13、Nanotechnology 纳米技术（纳米科技、奈米技术、奈米科技）。阳光大学生网 14、Renewable energy 可再生能源（量）（答为“可更新能源、再生能源”，或意思相近者，也得1分）。 15、Biomechanical energy 生物机械能（答为“生物力能、生物力学能”也得1分，而“生物化学能、生物能”，则得0.5分） 16、Nanogenerator 纳米发电机（答为“纳米发动机、纳米电机、纳米发生器、纳米生产器”，也得1分）。 17、Systems biology 系统生物学。 18、DNA sequencer DNA测序仪[答为“DNA测序（器、机）、DNA序列仪（器）”也得1分，答为DNA序列，仅得0.5分]。 19、Neurodegenerative diseases 神经退行性病（若答为“神经系统退行性疾病”或者“神经系统退化性疾病”，也得1）。 20、Amygdala 杏仁核（答为“杏仁体”，也得1分）。
生物专业英语词汇—词素（词根）部分 一、表示数量的词素 1. haplo,mono,uni 单，一，独haploid 单倍体 monoxide一氧化碳 monoatomic单原子的 2. bi,di,dipl,twi,du：二，双，两，偶 biocolor 双色, dichromatic 双色的, diplobacillus 双杆菌 dikaryon 双核体 twin 孪生 dual 双重的 3. tri 三，丙 Triple 三倍的 triangle三角 triacylglycerol三酰甘油 tricarboxylic acid cycle 三羧酸循环 4. quadri,quadru,quart,tetr,tetra：四 Quadruple 四倍的 quadrilateral四边的 quadrivalent四价的 quadruped四足动物 tetrode四极管 tetracycline四环素 5. pent, penta, quique五 pentose戊糖 pentagon五角形 pentane戊烷 quintuple 五倍的 pentose戊糖 pentomer五邻粒 6. hex,hexa,sex 六 hexose已糖 hexapod六足动物 hexapoda昆虫纲 hexamer六聚体 7. hepta,sept(i) 七 heptane 庚烷 heptose 庚糖 heptoglobin七珠蛋白8. oct八 octpus 章鱼 octagon八角形 octane 辛烷 octase 辛糖 9. enne, nona九 nonapeptide 九肽 enneahedron 九面体 10. deca, deka :十 decapod 十足目动物 decahedron 十面体 decagram 十克 11. hecto, 百 hectometer百米 hectoliter百升 hectowatt 百瓦 12. kilo,千 kilodalton (KD) 千道尔顿 kilobase 千碱基 kiloelectron volt 千电子伏特 13. deci,十分之一，分 decimeter 分米 decigram 十分之一克 14. centi,百分之一 15. milli,千分之一，毫 millimole 毫摩（尔） milliliter 毫升 16. micro,百万分之一，微，微小， 微量 microgram微克 microogranism微生物 microecology微生态学 micropipet微量移液器 17. nano十亿分之一，毫微，纳 nanosecond十亿分之一秒 nanometer纳米 18. demi,hemi,semi半 hemicerebrum 大脑半球 [hemi'seribr?m] semiopaque半透明： ['semi?u'peik] semi-allel半等位基因 semi-conductor半导体 19. holo 全，整体，完全 holoenzyme 全酶 holoprotein全蛋白 holocrine全（质分）泌 20. mega巨大，兆，百万 megaspore大孢子， ['meg?sp?:] megabasse兆碱基 megakaryocyte巨核细胞 megavolt兆伏 megalopolitan特大城市 [.meg?'l?p?lis] 21. macro 大，巨大，多 macrophage巨噬细胞 macrogamete大配子 macroelement常量元素 macromolecular大分子 22. poly,multi,mult 多，复合 polyacrylate聚丙烯酸酯 polymerase 聚合酶 multichain多链的 multinucleate 多核的 multicistronic mRNA多顺反子 mRNA multicopy多拷贝 二、表示颜色的词素 1. chrom颜色 chromophore生色团['kr?um?f?:] chromosome染色体 chromatography色谱法 [kr?um? 't?gr?fi] 2. melan,melano,nigr 黑 melanoma黑素瘤 melanin黑色素 melanophore黑色素细胞 3. xantho,flavo,fla,flavi,lute黄 xanthophyl叶黄素 xanthous黄色的，黄色人种 xathine黄嘌呤 flavin(e)黄素 flavone黄酮 letein黄体素，叶黄素 flavin adenine dinucleotide(FAD)黄素腺嘌呤二核 苷酸 4. erythro, rub, rubrm, ruf,红 erythrocyte红细胞 [i'riθr ?.sait]
英语常见词根(Stem) 一览 acu == sharp acute 敏锐的；尖锐的 acumem 敏锐；聪明acupuncture 针灸 alti == high altitude 高度altimeter 高度计exalt 提高；提升ambula == walk ambulance 救护车ambulant 流动的ambulate 行走、移动ann == year anniversary 周年纪念annual 每年的annals 编年史 anthro == man anthropoid 似人类的； 类人猿 anthropology 人类学 anthroposociology 人类社 会学 arch == ruler monarch君主anarchism 无政府主义patriarch 家长、族长aster/astr == star astrology 占星术astronomy 天文学asterisk 星号，星标audi == hearing audience 听众audible 听得见的audiphone 助听器 auto == self automation 自动化autobiography 自传autosuggestion 自我暗示bio == life biology 生物学biography 传记biocide 杀虫剂 brevi == short brief 简短的brevity 简洁abbreviate 缩写 capit == head capital 首都decapitate 斩首capitation 人头税；按人收费 ced == go;move recede 后退；引退unprecedented 史无前例的precede 先行，居先cess == go;move access 通路process 进展 chron == time chronology 年表，年代 学 chronic 慢性的 synchronal 同步的，同时发 生的 cide == kill;cut suicide 自杀insecticide 杀虫剂bactericide 杀菌剂confid == trust confidential 机密的confide 吐露(秘密) cord == heart accordance 一致，调和 concord 协调，同意discord 不和，不一致cred == trust;belief credit 信用；信任incredible 难以置信的credulous 轻信的 cur == run;move current 潮流excurse远足，旅行incursion 入侵，进入cycl == circle;wheel bicycle 自行车tricycle 三轮车hemicycle 半圆的 dic/dict == say;speak indicate 指示，暗示dictate 口授diction 措词 domin == rule;control dominate 主宰indomitable 不屈不挠的 duce/duct == lead;take introduce 介绍induce 引诱conduct 指导 equ == same;equal equality 平等equivalence 对应物equator 赤道 faci == easy facile 易得到的，不花 力气的 facilitate 使...容易 fact == make;do manufacture 制造factory 工厂benefactor 恩人，施恩者fer == carry;bring ferry 轮渡transfer 搬运，转移interfere 干预 fin == end;limit finalize 使...了结infinite 无限的define 限定，下定义flect/flex == bend reflect 反射，反映flexible 易弯曲的reflexctor 反射镜 flu == flow influence 影响fluent 流利fluid 流动的；液，流体form == shape reform 改革conform 符合 frag == break fragile 易碎的fragment 碎片fracture 骨折
个人整理 free electron laser 自由电子激光器 optical klystron 光学速调管 α-1,3-GalT α-1,3-glactsyltransferase α－1，3半乳糖苷转移酶 6-DMAP 6-Dimethyaminopurine 6－二氨基甲基嘌呤 AFS Simultaneous activation and fusion 融合同时激活 AI Artificial insemination 人工授精 BSA Bovine serum albumin 牛血清白蛋白 CB Cytochalasin B 细胞松弛素B CHX Cyclohexmide 放线菌酮 COCs Cumulus oocytes complexes 卵丘－卵母细胞复合体 DC Direct crruent 直流电 DMSO dimethylsulfoxide 二甲基亚砜 DNMT DNA methyltransferase DNA甲基转移酶 DPBS Dulbecco's phosphate buffered saline 杜氏磷酸盐缓冲液EAA Essential amino acid 必需氨基酸 ECG Equine chorionic gonadotropin 马绒毛膜促性腺激素 EGF Epidermal growth factor 表皮生长因子 ESC Embryo stem cell 胚胎干细胞 带 A chromosome A染色体[二倍体染色体组中的正常染色体（不同于B染色体）] A site [核糖体]A部位 ABA 脱落酸 abasic site 脱碱基位点，无碱基位点 abaxial 远轴的 abequose 阿比可糖，beta脱氧岩藻糖 aberrant splicing 异常剪接 aberration 象差；畸变；失常 abiogenesis 自然发生论，无生源论 ablastin 抑殖素（抑制微生物细胞分裂或生殖的一种抗体） abnormal distrbution 非正态分布 abnormality 异常，失常；畸形，畸变 ABO blood group system ABO血型系统 aboriginal mouse 原生鼠 abortin 流产素 abortion 流产，败育 abortive egg 败育卵 abortive infection 流产（性）感染 abortive transduction 流产（性）转导
Lesson One（4学时） Inside the Living Cell: Structure and Function of Internal Cell Parts Cytoplasm: The Dynamic, Mobile Factory细胞质：动力工厂 生命的大部分特征表现在细胞质的特征上。细胞质大部分由半流体物质组成，并由细胞膜（原生质膜）包被。细胞器悬浮在其中，并由丝状的细胞骨架支撑。细胞质中溶解了大量的营养物质，离子，可溶蛋白以及维持细胞生理需求的其它物质。 The Nucleus: Information Central（细胞核：信息中心） 真核细胞的细胞核是最大的细胞器，细胞核对染色体组有保护作用（原核细胞的遗传物质存在于拟核中）。细胞核含有一或二个核仁，核仁促进细胞分裂。核膜贯穿许多小孔，小分子可以自由通过核膜，而象mRNA和核糖体等大分子必须通过核孔运输。 Organelles: Specialized Work Units（细胞器：特殊的功能单位） 所有的真核细胞都含有多种细胞器，每个细胞器都有其特定功能。本节主要介绍核糖体，内质网，高尔基体系，液泡，溶酶体，线粒体和植物细胞中的质体。 核糖体的数量变化从几百到几千，核糖体是氨基酸组装成蛋白质的重要场所。完整的核糖体由大亚基和小亚基组成。核糖体沿着mRNA移动并阅读遗传密码，翻译成蛋白质。一条mRNA上可能有多个核糖体，称多聚核糖体。大多数细胞蛋白是由细胞质中核糖体生产。输出蛋白和膜蛋白通常与内质网有关。 内质网，带有花边的生物囊，有管状，泡状之分，以及光滑和粗糙面区别。两种都与蛋白质的合成和运输有关。粗糙内质网上分布许多核糖体，也可能提供细胞分裂后所需的细胞膜。光滑内质网上无核糖体，主要作用是脂肪和类固醇的合成以及细胞内有毒物质的氧化。两种内质网合成的产物在其中进行分流或运输到细胞外。 运输小泡能够将可运输分子从内质网运输到高尔基复合体上。在高尔基复合体中修饰，包装后输出细胞或传递到细胞质中的其他场所。 细胞中的液泡好象是中空的，但实际上充满了液体和可溶分子。最典型的液泡存在于植物细胞中，储备水，糖以及其它分子。动物中的液泡起吞噬和胞饮作用。 溶酶体是液泡亚单位，含有消化酶，降解大部分生物大分子。消化食物微粒和降解损伤的细胞残片。 线粒体是细胞中化学产能的场所。另外，植物细胞中的质体在光合作用中利用光能产生碳水化合物，线粒体内嵴上提供了很大的表面积并分布着产ATP酶。线粒体自我复制，并且可能是自由生活的原核生物在进化中形成的后代。 质体有两种类型：白色体，缺乏色素，是淀粉，蛋白质和油的储备场所；色质体，含有色素。叶绿体是最重要的色质体，含有与光合作用有关的叶绿素。叶绿体的内部结构是由多层膜形成的叶绿体基粒，其中包埋在基质中的基粒称子座。 The Cytoskeleton（细胞骨架） 所有的细胞都有细胞骨架，网络结构的纤丝充满了它所能触及的全部空间并且对细胞器提供支持作用。细胞骨架大部分由微丝组成，微丝主要由可收缩的肌动蛋白组成。动植物细胞的许多种类型细胞内运动与肌动蛋白有关。第二类蛋白是肌球蛋白，它与肌肉细胞的收缩有关。细胞骨架的另一个主要结构成分是微管，由球状的微管蛋白组成，象脚手架一般维持细胞的稳定形态。细胞骨架的中间丝提供了细胞质伸缩动力。机械酶，例如，肌球蛋白，动力蛋白，驱动蛋白与微丝，微管相互作用产生动力而引起细胞运动。 Cellular Movements（细胞运动 尽管细胞骨架提供了细胞的某些稳定性，微丝，微管及相关蛋白能使细胞爬行或滑动。这种运动需要固体基质依托并通过表面几何形状的改变而运动。某些细胞具备趋药性，即趋向或