Question

why do we say that an enzyme is reusable?
a the enzyme does not actively take part in the reaction. it just indicates that the reaction is complete.
b enzymes react with the substrate molecules to form products and become denatured in the process.
c enzymes ensure that the reaction continues without inhibition even if conditions such as temperature and ph are changed.
d the products of the reaction are released from the active sites of the enzyme, allowing other substrate molecules to bind with the sites.

Explanation:

Enzymes are biological catalysts. After the reaction, products are released from their active - sites, leaving the enzyme unchanged and available to catalyze another reaction. Option A is incorrect as enzymes actively participate in reactions. Option B is wrong because enzymes don't become denatured during normal catalytic cycles. Option C is not the reason for reusability.

Answer:

D. The products of the reaction are released from the active sites of the enzyme, allowing other substrate molecules to bind with the sites