Answer:
18 molecules of ATP will be produced for the breakdown of methionine to succinyl CoA and the entry of succinyl CoA to the citric acid cycle with no input of glucose.
Step-by-step explanation:
Reactions reduced co enzymes ATP formation
α keto glutarate to propionyl CoA 2 NADH 6 moles
Succinyl CoA to succinate 2 GTP≈ 2 ATP
Succinate to fumarate 2FADH2 4 moles
Malate to oxaloacetate 2 NADH 6 moles