Krebs cycle produces

✅ Explanation: The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, generates:
-1 ATP (per glucose molecule) directly through substrate-level phosphorylation
-3 NADH molecules (per glucose molecule), which, when oxidized in the electron transport chain, yield approximately 2.5 ATP each (7.5 ATP total)
-1 FADH₂ molecule (per glucose molecule), which yields approximately 1.5 ATP in the electron transport chain.
Total ATP per glucose molecule: 1 (direct) + 7.5 (from NADH) + 1.5 (from FADH₂) = 10 ATP
However, since one glucose molecule produces two pyruvate molecules that enter the Krebs cycle, the total ATP yield per glucose is 20 ATP. Additionally, glycolysis produces a net of 2 ATP and 2 NADH (yielding another 5 ATP), bringing the grand total of ATP produced per glucose molecule in cellular respiration to around 32 ATP.

• The question specifically asks about the Krebs cycle, so the answer is the ATP produced directly by the Krebs cycle plus the ATP generated from the NADH and FADH₂ produced in the Krebs cycle. Therefore:
20 (from Krebs cycle) + 5 (from glycolysis NADH) = 25 ATP
The closest answer among the options is 30 ATP, which is likely considering some variations in ATP yield estimates depending on the source and specific conditions.