Question

How many redox equivalents are removed from two molecules of $3-PGAL$?

• A. $3$
• B. $4$
• C. $1$
• D. $2$

Answer 1

The correct option is D $2$

3-phosphoglyceraldehyde (3-PGAL) is formed from the fructose-1,6-bisphosphate and two redox equivalents are removed from it. The redox equivalents are removed in the form of hydrogen atoms and are added onto the NAD${}^{+}$ and the 3-PGAL is oxidised with inorganic phosphate to give 1,3-bisphosphoglycerate.

Hence, the correct answer is '2'