respiratory pathway is believed to be a catabolic pathway however nature of TCA cycle is amphibolic explain for - Biology -

Question

respiratory pathway is believed to be a catabolic pathway? however
nature of TCA cycle is amphibolic ?explain for 3 marks question

Abhilasha Grover · Accepted Answer

The amphibolic pathway is the biochemical pathway that involves
both anabolism (synthesis of substances) and catabolism (breakdown
of substances) TCA or Kreb's cycle serves as a good example of
amphibolic pathway During this process the pyruvate is broken down
to release carbon dioxide â€‹During the first
reaction, the a four carbon compound (oxaloacetate) condenses with
a two carbon compound (acetate) to form a six carbon compound
(citrate) This reaction is typically an anabolic reaction After
this CO2 is lost in each step to produce a four carbon compound
succinic acid These steps are typically catabolic in nature Thus,
TCA or Kreb's cycle involves both anabolism (synthesis of
substances) and catabolism (breakdown of substances), so represents
an amphibolic pathway

respiratory pathway is believed to be a catabolic pathway? however nature of TCA cycle is amphibolic ?explain for 3 marks question