Class 9 Biology Enzymes Multiple Choice Questions (MCQ) PDF Download

MCQ 1: The kind of molecules at which the enzymes act are classified as

1. solutes
2. concentrates
3. nitrates
4. substrates

MCQ 2: The catabolism is related to

1. release of energy
2. absorption of energy
3. release of water
4. absorption of water

MCQ 3: The energy required in chemical reactions is called

1. solvent energy
2. activation energy
3. enzymatic energy
4. catalysis energy

MCQ 4: The categorization of enzymes is based on their

1. sequence of amino acids
2. working site
3. size
4. none of above

MCQ 5: The biochemical reactions are also considered as

1. gaseous release
2. chromosomal transfer
3. energy transfer
4. material transfer