Phosphofructokinases enzyme converts fructose-6-phosphate into:
Correct answer: B. Fructose-1,6-bisphosphate
- A. Fructose-I, 4-phosphate
- B. Fructose-1,6-bisphosphate
- C. Bisphosphate
- D. Fructose
Explanation
Phosphofructokinase (PFK) is an enzyme that catalyzes an important regulatory step in glycolysis. It converts fructose-6-phosphate (a six-carbon sugar) into fructose-1,6-bisphosphate (a six-carbon sugar with two phosphate groups attached). The reaction catalyzed by phosphofructokinase can be represented as follows: Fructose-6-phosphate + ATP (adenosine triphosphate) → Fructose-1,6-bisphosphate + ADP (adenosine diphosphate)
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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