Biology Review Sheet

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MULTIPLE CHOICE 1. Which of the following is true? a. All enzymes are fibrous proteins. b. All enzymes are globular proteins. c. The majority of enzymes are fibrous proteins. d. The majority of enzymes are globular proteins. ANS: D PTS: 1 TOP: 23.1 - WHAT ARE ENZYMES? 2. In addition to proteins, which type of molecules sometimes function as enzymes? a. carbohydrates c. lipids b. DNA d. RNA ANS: D PTS: 1 TOP: 23.1 - WHAT ARE ENZYMES? 3. Which of the following is true of enzymes? a. They shift the position of a chemical equilibrium. b. They speed up the rate of a chemical reaction. c. both a and b d. neither a nor b ANS: B PTS: 1 TOP: 23.1 - WHAT ARE ENZYMES? 4. Which of the following is true of enzymes? a. They lower the activation energy for a chemical reaction. b. They speed up the rate of a chemical reaction. c. both a and b d. neither a nor b ANS: C PTS: 1 TOP: 23.1 - WHAT ARE ENZYMES? 5. Which of the following is true of trypsin? a. It does not affect any peptide bonds. b. It hydrolyzes all peptide bonds. c. It hydrolyzes peptide bonds to leucine and phenylalanine. d. It hydrolyzes peptide bonds to arginine …show more content…
the conversion of both the D and L forms of arginine to urea and the D and L forms of ornithine ANS: B PTS: 1 TOP: 23.1 - WHAT ARE ENZYMES? 8. Which of the following explains why succinylcholine is used as a muscle relaxant? a. It destroys acetylcholine esterase. b. It is not hydrolyzed by acetylcholinesterase. c. It is rapidly hydrolyzed by acetylcholinesterase. d. It is slowly hydrolyzed by acetylcholinesterase. ANS: D PTS: 1 TOP: 23.1 - WHAT ARE ENZYMES? 9. The names of enzymes are often derived from which of the following? a. the reaction they catalyze c. both a and b b. the compound on which they act d. neither a nor b ANS: C PTS: 1 TOP: 23.2 - HOW ARE ENZYMES NAMED AND CLASSIFIED? 10. The names of enzymes are often derived from which of the following? a. the name of their discoverer c. both a and b b. the compound on which they act d. neither a nor

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