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Multiple Choice
In cellular metabolism, what is the main purpose of glycolysis?
A
To synthesize glucose from noncarbohydrate precursors in the cytosol
B
To use oxygen as the terminal electron acceptor to form and drive oxidative phosphorylation
C
To convert glucose into pyruvate while producing ATP and NADH
D
To oxidize pyruvate to and generate large amounts of ATP via the citric acid cycle
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Verified step by step guidance
1
Understand that glycolysis is a metabolic pathway occurring in the cytosol of cells where glucose, a six-carbon sugar, is broken down.
Recognize that the primary goal of glycolysis is to convert one molecule of glucose into two molecules of pyruvate, each containing three carbons.
Note that during this conversion, glycolysis produces a net gain of ATP molecules, which are the energy currency of the cell, and also generates NADH, a reduced electron carrier.
Distinguish glycolysis from other metabolic processes such as gluconeogenesis (which synthesizes glucose), oxidative phosphorylation (which uses oxygen to produce water and ATP), and the citric acid cycle (which oxidizes pyruvate to carbon dioxide).
Summarize that the main purpose of glycolysis is to provide energy and metabolic intermediates by converting glucose into pyruvate while producing ATP and NADH.