酶（enzyme）:生物催化剂，除少数RNA外几乎都是蛋白质。酶不改变反应的平衡，只是通过降低活化能加快反应的速度。脱脯基酶蛋白(apoenzyme):酶中除去催化活性可能需要的有机或无机辅助因子或辅基后的蛋白质部分。全酶（holoenzyme）:具有催化活性的酶，包括所有必需的亚基，辅基和其它辅助...
氨基酸（amino acid）：是含有一个碱性氨基和一个酸性羧基的有机化合物，氨基一般连在α-碳上。必需氨基酸（essential amino acid）：指人（或其它脊椎动物）（赖氨酸，苏氨酸等）自己不能合成，需要从食物中获得的氨基酸。非必需氨基酸（nonessential amino...
Methane 甲烷 Ethane 乙烷 Propane 丙烷 Butane 丁烷 Pentane 戊烷 Hexane 己烷 Heptane 庚烷 Octane 辛烷 Nonane 壬烷 Decane 癸烷 Undecane 十一烷 Dodecane 十二烷 Tridecane 十三烷 Tetrad...
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mob - n. a large group of wild or angry people model - n. an example; something, usually small, made to show how something will look or work moderate ...
matter - n. anything that can be seen or felt; what things are made of may - v. a word used with an action word to mean permit or possible ("May ...
magazine - n. a publication of news, stories, pictures or other information mail - n. letters, papers and other things sent through an official system...
live - v. to have life; to exist; ad. having life; alive load - v. to put objects on or into a vehicle or container; n. that which is carried loan - n...
land - v. to come to the earth from the air ("Airplanes land at airports."); n. the part of the earth not covered by water; the ground langu...
laboratory - n. a room or place where experiments in science are done lack - v. to be without; n. the condition of needing, wanting or not having lake...