Question

multiple choice question
which of the following describes the activity of a particular enzyme?
o it can be affected by substances which bind the enzyme and alter its shape
o it always increases when a substance binds the enzyme and alters its shape.
o it remains the same even when other substances bind the enzyme and alter its shape.

Explanation:

Enzyme activity can be modulated by substances that bind to the enzyme and change its conformation. These substances can either enhance (activators) or inhibit (inhibitors) the enzyme's activity. So, it is not always an increase in activity when shape - change occurs, and activity does not remain the same upon binding of modulatory substances.

Answer:

It can be affected by substances which bind the enzyme and alter its shape