Question

Aerobic respiratory pathway is appropriately termed

• A. Catabolic.
• B. Parabolic.
• C. Amphibolic.
• D. Anabolic.

Answer 1

The correct option is C Amphibolic.

A metabolic pathway that participates in both anabolic and catabolic pathways is called as amphibolic. The citric acid cycle (Krebs cycle) is a good example of amphibolic pathway. The first reaction of the cycle, in which oxaloacetate (a four carbon compound) condenses with acetate (a two carbon compound) to form citrate (a six carbon compound) is typically anabolic. The next few reactions, which are intramolecular rearrangements, produce isocitrate. The following two reactions are typically catabolic.