Question

which phase of glycolysis requires an investment of atp?
oxidative phosphorylation
energy payoff phase
energy investment phase
citric acid cycle

Explanation:

• Oxidative phosphorylation is part of the electron transport chain, not glycolysis.
• The energy payoff phase of glycolysis produces ATP, not use it.
• The energy investment phase of glycolysis uses (invests) ATP to phosphorylate glucose and its intermediates to start the breakdown process.
• The citric acid cycle (Krebs cycle) is a separate stage of cellular respiration, not part of glycolysis.

Answer:

energy investment phase