Q.

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalysed by                [2019]

1 phosphofructokinase  
2 aldolase  
3 hexokinase  
4 enolase  

Ans.

(3)

Glucose is phosphorylated to glucose-6-phosphate by ATP in presence of enzyme hexokinase and Mg2+.