Question

Study the given steps of glycolysis and identify the enzymes (i), (ii), and (iii) responsible for carrying out these steps.

• A. Phosphohexose - (i), Phosphofructokinase - (ii), Aldolase - (iii)
• B. Hexokinase - (i), Phosphofructokinase - (ii), Aldolase - (iii)
• C. Phosphohexose - (i), Hexokinase - (ii), Phosphofructokinase - (iii)
• D. Aldolase - (i), Phosphofructokinase - (ii), Phosphohexose isomerase - (iii)

Answer 1

The correct option is A Phosphohexose - (i), Phosphofructokinase - (ii), Aldolase - (iii)

The four regulatory enzymes are hexokinase, phosphohexose isomerase, phosphofructokinase, and, aldolase, etc.

• Glucose gets converted into glucose-6-phosphate with the help of hexokinase.
• Then, glucose-6-phosphate gets converted into fructose-6-phosphate with the help of phosphohexose isomerase.
• Fructose-6-phosphate gets converted into fructose-1,6-biphosphate with the help of phosphofructokinase.
• Fructose-1, 6-biphosphate gets converted into glyceraldehyde-3-phosphate with the help of aldolase.

So, the correct answer is (A).