Which Reaction in Glycolysis Requires ATP as a Substrate

Question

Which reaction in glycolysis requires ATP as a substrate?
A) hexokinase
B) glyceraldehyde-3-phosphate dehydrogenase
C) pyruvate kinase
D) aldolase
E) phosphoglycerate kinase

Accepted Answer

Hexokinase requires ATP as a substrate to add a phosphate group to glucose, forming glucose-6-phosphate.