Ch. 8 - Microbial Metabolism (practice questions) with complete solutions

The term used to describe all of the chemical reactions within a cell is ______. a. metabolism b. cellular respiration c. phosphorylation d. catabolism e. redox reactions correct answer: a. metabolism A type of cofactor would be ______. a. vitamins b. active sites c. ribozymes d. substrates e. metallic ions correct answer: e. metallic ions Ribozymes are ______. a. catalysts for DNA splicing b. unique to prokaryotes c. unique to eukaryotes d. catalysts for RNA splicing e. ribosomes which catalyze reactions correct answer: d. catalysts for RNA splicing Enzymes that are only produced when substrate is present are termed ______. a. endoenzymes b. exoenzymes c. conjugated enzymes d. induced enzymes e. constitutive enzymes correct answer: d. induced enzymes Enzymes that catalyze the removal of electrons from one substrate and the addition of electrons to another are called ______. a. oxidoreductases b. isomerases c. ligases d. lyases e. transferases correct answer: a. oxidoreductases The bacterial genus Bacillus can utilize starch as a nutrient by splitting the starch molecule into smaller molecules of glucose with the addition of water. The enzymes to do this would be classified as ______. a. isomerases b. transferases c. oxidoreductases d. hydrolases e. ligases correct answer: d. hydrolases Enzymes that catalyze the removal of a a functional group and its subsequent attachment to a new substrate are called ______. a. isomerases b. ligases c. oxidoreductases d. transferases