Question

How many $O_2$ molecules are required for complete oxidation of one molecule of phosphotriose:-

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is C 3

• The complete oxidation of Glucose requires a total of $6O_2$ molecules as shown below :
  

$C_6{H}_{12}{O}_6$ + $6O_2\to 6C{O}_2+6H_{2}O$

• Since a molecule of oxygen is broken down into 2 molecules of phosphotriose pyruvate, each requires a total of 3 O2 molecules for complete oxidation.
  

So, the correct option is '$3$'.