What are the two phases of glycolysis

Investment/preparatory phase

Yield/payoff phase.

Glycolysis is a pathway mechanism in cellular respiration which  involves one molecule of glucose being converted into two molecules of pyruvate, two hydrogen ions and two molecules of water.

The Investment/preparatory phase the addition of 2 ATPs which help in the phosphorylation of glucose in order to make it ready for breakdown and subsequent reactions.

The Yield/payoff phase involves different substrate level phosphorylation processes. The process allows cells to gain two ATP and two NADH compounds after which glucose is partially oxidized to form pyruvate which is the end product.

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The pathway for glycolysis has two phases: the energy investment phase and energy generation phase. The first five steps in the glycolysis are the energy investment "preparatory phase", which produce glyceraldehyde 3-phosphate. Energy generation phase "payoff phase" is the last five steps of glycolysis, which produce the final two pyruvate molecules product.

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