Question

Oxalosuccinic acid, a transient intermediary compound of Kreb's cycle is _____.

• A. 4-carbon compound
• B. 5-carbon compound
• C. 6-carbon compound
• D. 3-carbon compound

Answer 1

The correct option is C 6-carbon compound

Krebs' cycle is a cyclic oxidation process in mitochondria that starts with the formation of citric acid. Isocitric acid (6C) when formed gets oxidized to oxalosuccinic acid by the action of isocitric dehydrogenase and reduction of $NA{D}^{+}$ to $NAD{H}_2$ takes place. As there is no evolution of $C{O}_2$, the oxalosuccinic acid is also a 6 carbon compound.

So, the correct answer is option C.