Overview of Energy Metabolism

Question 1

What mainly regulates the shifting metabolic patterns?

Answer 1

Insulin/glucagon ratio

Question 2

In which levels are controlled the anabolic and catabolic pathway?

Answer 2

• allosteric 🔛 and off of rate-limiting enzymes
• control gene expression by insulin and glucagon
• phosphorylation (glucagon) and dephosphorylation (insulin) of rate-limiting enzymes

Question 3

What is reduction?

Answer 3

Addition of electrons - may be free, part of H, or a hydride ion (H➖)

Question 4

What tissue uses fatty acids, no glucose (exception) in well-fed state?

Answer 4

Cardiac muscle