Enzymes a) are composed of long chains of fatty acids. b) can be destroyed by variations in temperature or ph. c) are used up, in the process of performing a chemical reaction. d) raise the amount of energy required to start a chemical reaction.

How does the fermentation of pyruvic acid in cells contribute to the formation of atp? a. it completes the oxidation of glucose to co2, creating atp. b. it generates lactic acid, which cycles back through the krebs cycle, producing 2 atp molecules. c. it converts fadh2 to phosphate, which bonds with adp. d. it produces 2 nad+ molecules, which cycle back to fuel the glycolysis reaction, allowing 2 atp molecules to be produced.