For ingested foods, the first opportunity for enzymatic digestion occurs in the see concept 41.3 (page 903) for ingested foods, the first opportunity for enzymatic digestion occurs in the see concept 41.3 (page 903) mouth stomach small intestine large intestine pancreas

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.