Assertion : The first product of $\mathrm{CO}_{2}$ fixation in $\mathrm{C}_{3}$ pathway is OAA.\ Re

Question

Assertion : The first product of $\mathrm{CO}_{2}$ fixation in $\mathrm{C}_{3}$ pathway is OAA.\ Reason : The first product of $\mathrm{CO}_{2}$ fixation in $\mathrm{C}_{4}$ pathway is 4 carbon compound.\

Professor PC Thomas Classes · Answer

(d) : The first product of $\mathrm{CO}_{2}$ fixation in $\mathrm{C}_{3}$ pathway is 3-phosphoglyceric acid (PGA) which is a 3 -carbon compound while the first product of $\mathrm{CO}_{2}$ fixation in $\mathrm{C}_{4}$ pathway is oxaloacetic acid $(\mathrm{OAA})$ which is a 4 -carbon compound.