Chapter 16- Glycolysis

Question 1

Glycolysis can be thought of as comprising two stages

Answer 1

Stage 1: trapping and preparation phase

Stage 2: ATP is harvested when 3 carbon fragments are oxidized to pyruvate

Question 2

Glucose enters the cell…

Answer 2

• it is phosphorylated by ATP to form glucose 6-phosphate
• the transfer of the phosphoryl group from ATP to the hydroxyl group on Carbon 6 of glucose is catalyzed by hexokinase: transfer of a phosphoryl group from ATP to a variety of six carbon sugars (hexoses), such as glucose and mannose
• hexokinases require Mg2+ for activity

Question 3

Kinases

Answer 3

Enzymes that catalyze the transfer of a phosphoryl group from ATP to an acceptor