During the Krebs Cycle 1. hydrogen ions and oxygen form water
2. the cell releases a small amount of energy through fermentation
3. each glucose molecule is broken down into 2 molecules of pyruvic acid
4. pyruvic acid is broken down into carbon dioxide in a series of reactions

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .