*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

Enzyme molecules,Glucose,pyruvic acid

Explanation:

The substances that most directly control the rate of these reactions are known as Enzyme molecules.

The organic molecule glucose is represented by C6H12O6.

The end product is of greatest benefit to the organism is pyruvic acid.

answer; the male's sperm cells have mitochondria, but because the sperm contributes dna but no cytoplasm, no mitochondria are passed to the egg at ferilization;