Which one is amphibolic?

• A. Glycolysis
• B. ETC
• C. Gluconeogenesis
• D. Kreb’s cycle

The term "amphibolic" refers to metabolic pathways that can function in both anabolic (building up) and catabolic (breaking down) processes. Among the options provided, the correct answer is:

Kreb’s Cycle

The Kreb’s cycle, also known as the citric acid cycle, is amphibolic because it plays a role in both the breakdown of carbohydrates, fats, and proteins for energy and the synthesis of various biomolecules.

Why Kreb’s Cycle is Amphibolic

• Energy Production: It helps in generating ATP through the oxidation of acetyl-CoA.
• Building Blocks: It provides intermediates for the synthesis of amino acids and other important compounds.

In contrast, glycolysis and gluconeogenesis are primarily involved in carbohydrate metabolism, while the electron transport chain (ETC) is mainly focused on energy production. Thus, Kreb’s cycle is the most versatile among the options listed.