生物专业英语复习

+ When carbon unites with oxygen, it forms a colorless, od3;
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tasteless gas called carbon dioxide, which is heavier than air and will extinguish a flame. Oxidation is the tendency of an atom to give up electrons, and reduction is the tendency to receive electrons during reaction. Liquid wastes are the most troublesome, because they often involve nonretractable chemicals. Plastics make up a large amount of waste, since they are available in numerous forms. Sodium metal reacts with water to form hydrogen and solution of sodium hydroxide.
病毒是比微生物更小的生物体，它们会感染植物，动物和细菌。
Viruses are submicroscopic agents which infect plants, animals and bacteria.
一种酶对其催化的反应及底物具有选择性。
An enzyme is quite selective about which reaction it will enhance and which reactant it will deal with
amino acid 氨基酸
toxic 有毒的
+ DNA is a double-stranded molecule that contains deoxyribose, + +
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phosphate, and four different nitrogen bases. Because amino acids all have amino and carboxyl groups, different amino acids have the same side chains. Maintaining strains on slope agar at low temperatures in the refrigerator usually reduce the metabolic activity and the rate of multiplication. twenty naturally occurring amino acids are used to make proteins. The paraffin oil is a kind of inactive substance. An acid is a substance that releases H+ into a solution. An atom is the smallest unit of matter whose behavior can be predicted. Maintaining strains on slope agar at low temperatures in the refrigerator usually reduce the metabolic activity and the rate of multiplication. Cellulose is a structural polysaccharide, and starch is a storage polysaccharide. In a solution of NaCl and water, is NaCl the solvent and water is the solute.
所有物质都由元素这种基本成分组成。
All matter is composed of basic substances called elements.
蛋白质是由氨基酸序列组成的聚合物。
Proteins are polymers consisting of precisely defined linear sequences of amino acids.
sulfur 硫
element 元素 potassium 钾 细菌 bacteria virus 病毒 infect 感染 二氧化碳carbon dioxide sodium nitrate 硝酸钠
calcium phosphate 磷酸钙
微生物 microorganism pollution 污染 pathogen 致病菌 deoxyribose 脱氧核糖 nitrogen 氮 formula 分子式 噬菌体 phage
废物有三种形态，即固态、液态和气态。
Wastes occur in all three states, i.e., solids, liquids, and gases.
羧酸 Carboxylic acid
核苷酸 nucleotide compound化合物 fungi 真菌 polypeptide 多肽 亚单位subunit oxygen 氧 淀粉 starch hormone 激素
microbial strain 微生物菌株 酶 enzyme
carbohydrate 碳水化合物