Question

Phosphorylation of glucose during glycolysis is catalysed by
a) phosphoglucomutase
b) , phosphoglucoisomerase
(c) hexokinase
(d) phosphate.

Answer 1

Option (c) hexokinase

Hexokinase catalyses the conversion of glucose into glucose 6-phosphate by ibe use of ATP molecule in phosphorylation reaction.

The other options are incorrect because
Phosphoglucomulase is an enzyme that transfers a phosphate group in D-glucose monomer from 1-to 6 position of carbon in forward direction (changes glucose 1-phosphate to glucose-6 phosphate).
Phosphogiucolsornerase catalyses the conversion of glucose 6 phosphate to fructose 6 phosphate.
Phosphorylase is an enzyme which catalyses the addition of phosphate PO_4^- group from inorganic phosphate to an acceptor.