微生物期末英文习题答案

一、CHOICE QUESTIONS：（20 Cent） 1. Catabolism is a form of metabolism in which ___ molecules are converted into ___ molecules. a. large, small c. amino acid, protein b. small, large d. food, storage 2. A microbicidal agent has what effect? a. sterilizes b. inhibits microorganisms c. is toxic to human cells d. destroys microorganisms 3. Environmental factors such as temperature and pH exert their effect on the ___ of microbial cells. a. memb