Question

During photorespiration, when two $O_2$ molecules react with $2$ moles of RUBP then how many $3-PGA$ molecules are formed from $2$ molecules of $2$ - phosphoglycolate

• A. $2$
• B. $1$
• C. $3$
• D. $4$

Answer 1

Answer: (A)

$2$

During photorespiration, 2 molecules of RuBP reacts with two molecules oxygen moelcules and form into 2 molecules of Phosphoglycolic acid(C₂) and 2 molecules phosphoglyceric acid(C₃). These two molecules of phosphoglycolic acid undergo sequence of biochemical reactions and form into 2 molecules of phosphoglyceric acid.

So, the correct option is ‘2’.