Final answer:
The 'Priming Step' of Glycolysis requires an initial investment of 2 ATP to start the biochemical reactions that breakdown glucose, leading to a net gain of 2 ATP per glucose once the Glycolysis is complete.
Step-by-step explanation:
Glycolysis and ATP Investment
The process of Glycolysis can be divided into two main phases, of which the first one is known as the Priming Step or the energy-consuming phase. During this priming phase, there is an initial input of 2 ATP molecules required to trigger the reaction for each molecule of glucose. This phase involves two key steps:
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Overall, the result is a setup for the later stages of Glycolysis where ATP will be produced. However, it is important to note that while 2 ATP are used in the initial phase, the complete process of Glycolysis eventually leads to a net gain of 2 ATP per glucose molecule.