Enzyme Specifity Multiple Choice Questions with Answers – PDF Download

MCQ 1: In the lock and key hypothesis, the substrate is the:

1. key
2. lock
3. both a and b
4. magenta molecule

MCQ 2: The fitting of the substrate in the active site is called:

1. hydrolysis
2. condensation
3. polymerization
4. lock and key hypothesis

MCQ 3: The most modern hypothesis about enzyme action is called:

1. lock and key hypothesis
2. lock and substrate hypothesis
3. induced fit hypothesis
4. enzyme substrate hypothesis

MCQ 4: The substrate is kept at lock positions of the enzyme through temporary bonds, are made by the:

1. OH - group
2. carbon of the amino chain
3. R group of amino acids
4. oxygen group

MCQ 5: All are true for enzymes but that they:

1. biological catalysts
2. speed up the rate of a reaction
3. may change chemically during the reaction
4. may change physically during the reaction