Question

ketogenesis occurs when
multiple choice
pyruvate production from glycolysis outpaces acetyl coa production from beta - oxidation
formation of nadh and fadh₂ overwhelms the capacity of the electron transport chain
free fatty acids resulting from lipolysis exceed the transport capacity of carnitine
acetyl coa production from beta - oxidation outpaces pyruvate production from glycolysis

Explanation:

Ketogenesis is the process of synthesizing ketone bodies. When acetyl - CoA production from beta - oxidation (fatty acid breakdown) exceeds pyruvate production from glycolysis (glucose breakdown), the excess acetyl - CoA is used to form ketone bodies.

• In the first option, if pyruvate from glycolysis outpaces acetyl - CoA from beta - oxidation, there is no excess acetyl - CoA for ketogenesis.
• The second option about NADH and FADH₂ overwhelming the electron transport chain is related to oxidative phosphorylation issues, not ketogenesis.
• The third option about free fatty acids exceeding carnitine transport capacity is related to the entry of fatty acids into the mitochondria for beta - oxidation, not directly to ketogenesis.

Answer:

acetyl CoA production from beta - oxidation outpaces pyruvate production from glycolysis