Answer:
d) All of the statements are true.
Explanation:
<u>
It includes reactions catalyzed by three isomerase enzymes.</u>
The statement is true because:
The first reaction which involve isomerase is the conversion of glucose 6-phosphate into fructose 6-phosphate with the help of an enzyme phosphoglucose isomerase.
The second reaction is conversion of dihydroxyacetone phosphate (DHAP) into glyceraldehyde 3-phosphate with the help of an enzyme triphosphate isomerase.
The 3rd reaction is conversion of 3-phosphoglycerate to 2-phosphoglycerate.
<u>It includes five phosphate transfer reactions. </u>
The statement is true because:
1. The conversion of glucoe to glucose 6-phosphate.
2. The conversion of fructose 6-phosphate to fructose 1,6-biphosphate.
3.The conversion of glyceraldehyde 3-phosphate to 1,3-biphosphoglycerate.
4. The conversion of 1,3-biphosphoglycerate to 3-phosphoglycerate.
5. The conversion of phosphoenol pyruvate to pyruvate.
<u>It includes three enzymes that are regulated by product inhibition. </u>
The statement is true because:
1. Hexokinase which is inhibited by its product glucose 6-phosphate.
2. Phosphofructokinase which is inhibited by ATP.
3. Pyruvate kinase which is also inhibited by ATP.
Thus, all the statements are correct.
