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WAEC Biology 2013 Papers

Question : 24

Total: 52

Solution:

Concept:

The enzyme that phosphorylates glucose at the start of glycolysis is hexokinase.

Explanation:

In the first step of glycolysis, glucose is phosphorylated by ATP to form glucose-6-phosphate.

The reaction is:

\text{Glucose} + ATP \rightarrow \text{Glucose-6-phosphate} + ADP

This phosphorylation is catalysed by the enzyme hexokinase.

Therefore, the correct option is C.

Answer:

C. hexokinase

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