QUESTION 28 During glycolysis, for each glucose molecule, how many ATPs are used? Enter your answer as a single number (e.g., 6). Do not write out the number. QUESTION 29 During the citric acid cycle, what is the total yield of NADHs per glucose molecule? Enter your answer as a single number (e.g., 6). Do not write out the number. QUESTION 30 How many ATPs are produced by the electron transport chain alone (not counting chemiosmosis)? Enter your answer as a single number (e.g., 6). Do not write out the number.