How much atp is produced from a single glucose molecule in each chemical pathway?

a. glycolysis yields 8 atp molecules. krebs cycle yields 8 atp molecules. ets yields 16 atp molecules.

b. glycolysis yiels 2 atp molecules. krebs cycle yields 2 atp molecules. ets yields 34 atp molecules.

c. glycolysis yields 34 atp molecules. krebs cycle yields 4 atp molecules. ets yields 8 atp molecules.

d. glycolysis yields 4 atp molecules. krebs cycle yields 4 atp molecules. ets yields 17 atp molecules.

The correct answer is (B)

Aerobic respiration is required for the production of ATP.  Many textbooks write that the total number of ATP production in oxidation of 1 molecule of glucose is 38 ( 2 from glycolysis, 2 from the kreb cycle and  about 34 from the electron transport system). However, this maximum yeild is never quite reached because of losses due to leaky membrane as well as the cost of moving pyruvate and ADP into the mitochondrial matrix, and current estimate range around 29 to 30 ATP per glucose.

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