11. Organic molecules that increase the rate of metabolic reactions with themselves changing are known as
A. coenzymes
B. enzymes
C. substrates
D. reactants
12. Protein portion of an enzyme when it is combined with organic molecule is termed as
A. apoenzyme
B. co-enzyme
C. holoenzyme
D. co-factors
13. The active form of enzyme is
A. apoenzyme
B. coenzyme
C. holoenzyme
D. none of these
14. Enzymes can
A. not pass through semipermeable membrane
B. pass through semipermeable membrane
C. dissolve semipermeable membrane
D. none of these