*11. the substances that most directly control the
rate of these reactions are known as (1) enzyme mole-
cules (2) oxygen molecules (3) neurotransmit-
ters (4) disaccharides
* 12. which organic molecule is represented by
ch1206? (1) starch (2) glucose (3) chlorophyll
(4) cellulose
* 13. which end product is of greatest benefit to the
organism in which these reactions occur? (1) lactic
acid (2) alcohol (3) pyruvic acid (4) atp