2022 Phase 2 Respiration in PlantsTricarboxylic Acid Cycle Easy Question 1 of 3 in Tricarboxylic Acid Cycle

The 5-C compound formed during TCA cycle is:

A Fumaric acid
B $\alpha$-ketoglutaric acid
C Oxalo succinic acid
D Succinic acid

The answer is B.

Solution

$\alpha$-ketoglutaric acid is a 5-carbon compound. Fumaric acid and succinic acid are 4-carbon compounds, and oxalosuccinic acid is a 6-carbon compound.

Concept Tricarboxylic acid cycle

Tricarboxylic Acid Cycle in past papers

3 questions from this chapter have appeared across 3 exam years.