Which factor makes enzymes well-suited to the role of catalyst in a biochemical reaction? A)Enzymes do not affect the energy of a reaction.

B)Enzymes slow down reactions so products can form.

C)Enzymes can be reused because they do not permanently bond with substrate.

D)Enzymes can only bind to other enzymes so the same product is formed each time.

C

Explanation: Once an enzyme binds to a substrate and catalyzes the reaction, the enzyme is released, unchanged, and can be used for another reaction.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.