Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 9.4, Problem 1R
Summary Introduction
To review:
The necessity of replenishing oxidized nicotinamide adenine dinucleotide (NAD+) in continuing glycolysis in the absence of oxygen (O2).
Introduction:
Glycolysis is the catabolic pathway of oxidizing glucose to release energy in the form of ATP (adenosine triphosphate). This reaction occurs in the cell’s cytoplasm. In the absence of oxygen or during anaerobic conditions, the energy generation pathway switches to fermentation instead of oxidative phosphorylation after the glycolytic pathway.
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Life: The Science of Biology
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- What do the electrons added to NAD do? a. They become part of a fermentation pathway. b. They go to another pathway for ATP production. c. They energize the entry of the acetyl group into the citric acid cycle. d. They are converted into NADP.arrow_forwardHow does an increase in the NADH/NAD+ratio affect the activity of pyruvate dehydrogenase?arrow_forwardHow is the reduced NAD produced in glycolysis used in fermentation?arrow_forward
- What is the maximum number of ATP molecules produced in the electron transport chain from a single NADH?arrow_forwardWhy can pyruvate cross the mitochondrial membrane but no other molecule after step 1 in glycolysis can?arrow_forwardHow is the reduced NAD produced in glycolysis used in aerobic respiration?arrow_forward
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