Describe the two phases of glycolysis. What is the net outcome of each phase?

Glycolysis, a central metabolic pathway, occurs in the cytoplasm of cells and involves the breakdown of glucose into pyruvate, generating ATP and NADH. It comprises two distinct phases: the energy investment phase and the energy payoff phase.

### Energy Investment Phase:
This initial phase consumes ATP to activate glucose and prepare it for subsequent breakdown. It comprises three key steps:

1. Glucose Priming: Glucose, a six-carbon sugar, is phosphorylated twice. The first phosphorylation is catalyzed by hexokinase or glucokinase, converting glucose to glucose-6-phosphate (G6P) by utilizing one ATP molecule. This step helps trap glucose inside the ____ ____ ____ ____ ___.
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