Enzyme Specifity MCQ (Multiple Choice Questions) PDF Download

In the lock and key hypothesis, the substrate is the

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

The fitting of the substrate in the active site is called

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

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

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

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