16.What is the fate of the NADH and FADH2 made during the first stages of aerobic respiration? A. They carry electrons to the electron transport chain. B. They carry electrons to water. C. They carry electrons to acetylaldehyde producing ethanol or lactic acid. D. They carry them to the Calvin cycle to reduce carbon dioxide. E. They carry electrons to the Krebs cycle. 17.Which stage of cell respiration makes the majority of ATP? A. Glycolysis B. Krebs cycle C. Electron transport chain D. Fermentation E. They all produce the same amount. 18.Which of the following macromolecules can be broken down into intermediate products that enter cellular respiration? A. Proteins B. Lipids C. Nucleic acids D. Carbohydrates E. All of the choices are correct. 19.How many net ATP are made in glycolysis? A. 1 B. 2 C. 6 D. 34 E. 38 20.Glycolysis takes place in the ____________, and the Krebs cycle and electron transport chain take place in the __________. A. mitochondrial matrix; inner mitochondrial membrane B. cytoplasm; endoplasmic reticulum C. intermembrane space of the mitochondria; mitochondrial matrix D. cytoplasm; mitochondria E. mitochondria; cytoplasm  Â