exam questions

Question 1

Describe one similarity + one difference between lock and key theory and induced fit model?

Answer 1

• similar = substrate binds to enzymes active site
• induced fit = active site changes shape, inlock and key it does not

Question 2

Maltose is hydrolysed by the enzyme maltase.
Explain why maltase catalyses only this reaction.

Answer 2

• active site complementary to maltose
• so only maltose can bind to active site
• to form enzyme-substrate complex