Which of the following is (are) true concerning enzymes? a. They are very specific in their activities. b. They cannot be reused. c. They contain active sites. d. They are needed in large amounts in...

Which of the following is (are) true concerning enzymes?

a. They are very specific in their activities.

b. They cannot be reused.

c. They contain active sites.

d. They are needed in large amounts in cells.

A cell stimulated to increase its steroid production will have abundant

a. ribosomes.

b. rough ER.

c. smooth ER.

d. Golgi apparatus.

e. secretory vesicles.