Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Chapter 23.2, Problem 4QC
Summary Introduction
To review:
The amount of adenine triphosphate (ATP) expended in the energy investment phase of glycolysis. Also, the amount of ATP generated during the payoff phase.
Introduction:
Glycolysis is the biochemical pathway that involves the breakdown of one molecule of glucose into two molecules of pyruvate. This reaction takes place in the cytosol of the cell. It has two phases, namely, energy investment phase and the energy payoff phase.
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How many ATP (of 1 mole glucose) are produced in the 2nd phase of glycolysis?
Which of the following events occurs during the energy-payoff phase of glycolysis?
One carbon of a pyruvate molecule is oxidized to carbon dioxide.
Oxaloacetate receives a two-carbon acetyl group from acetyl coenzyme A to form citrate.
Substrate-level phosphorylation
Oxidative Phosphorylation
In which stage of aerobic cellular respiration are FADH2 molecules produced?
Pyruvate Oxidation
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Krebs Cycle
Electron Transport
Which of the following events does not occur during pyruvate processing (pyruvate oxidation)?
One carbon atom of each pyruvate is oxidized to carbon dioxide.
NAD+ coenzyme is reduced to NADH.
The remaining two carbon atoms of pyruvate (acetyl unit) reacts with coenzyme A to produce acetyl CoA.
FAD coenzyme receives two hydrogen atoms to produce FADH2.
How does the “investment phase” of glycolysis effect the net yield of ATP in that pathway?
Chapter 23 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 23.1 - 1. How do catabolism and anabolism differ?
Ch. 23.1 - Prob. 2QCCh. 23.1 - 3. How do endergonic and exergonic reactions...Ch. 23.1 - Why are endergonic and exergonic reactions...Ch. 23.1 - Prob. 5QCCh. 23.1 - How does ATP fuel cellular processes?Ch. 23.1 - 7. In an oxidation-reduction reaction, what...Ch. 23.1 - 8. What is electron affinity? Do electrons flow...Ch. 23.1 - What is the electromotive force?Ch. 23.2 - How do substrate-level phosphorylation and...
Ch. 23.2 - What is glycolytic catabolism? Why is it also...Ch. 23.2 - Prob. 3QCCh. 23.2 - Prob. 4QCCh. 23.2 - Prob. 5QCCh. 23.2 - 6. Why is it important to regenerate NAD+ under...Ch. 23.2 - 7. What products are generated by the citric acid...Ch. 23.2 - Prob. 8QCCh. 23.2 - What is the potential energy in the bonds of...Ch. 23.3 - Prob. 1QCCh. 23.3 - Prob. 2QCCh. 23.3 - Prob. 3QCCh. 23.3 - Prob. 4QCCh. 23.3 - Why must the body eliminate the ammonia that...Ch. 23.4 - 1. How is glucose stored in the body?
Ch. 23.4 - Prob. 2QCCh. 23.4 - Prob. 3QCCh. 23.4 - Prob. 4QCCh. 23.4 - How are nonlipids converted into fats?Ch. 23.4 - Prob. 6QCCh. 23.4 - Prob. 7QCCh. 23.5 - 1. Why does anabolism dominate in the absorptive...Ch. 23.5 - Prob. 2QCCh. 23.5 - Prob. 3QCCh. 23.5 - Prob. 4QCCh. 23.5 - Prob. 5QCCh. 23.5 - 6. How do the actions of leptin differ from those...Ch. 23.6 - Prob. 1QCCh. 23.6 - Prob. 2QCCh. 23.6 - Prob. 3QCCh. 23.6 - Prob. 4QCCh. 23.6 - Prob. 5QCCh. 23.6 - Prob. 6QCCh. 23.6 - Prob. 7QCCh. 23.6 - Prob. 8QCCh. 23.7 - Prob. 1QCCh. 23.7 - Prob. 2QCCh. 23.7 - Prob. 3QCCh. 23.7 - Prob. 4QCCh. 23.7 - Prob. 5QCCh. 23.7 - Prob. 6QCCh. 23.7 - Prob. 7QCCh. 23.7 - Why is HDL considered good cholesterol, whereas...Ch. 23.7 - Prob. 9QCCh. 23.7 - Prob. 10QCCh. 23.7 - Prob. 11QCCh. 23 - Which of the following statements is false? a....Ch. 23 - Prob. 2CYRCh. 23 - Fill in the blanks: A/an ________reaction releases...Ch. 23 - Mark the following statements as true or false. If...Ch. 23 - Prob. 5CYRCh. 23 - Place the following events of glucose catabolism...Ch. 23 - Which of the following statements is false? a....Ch. 23 - Prob. 8CYRCh. 23 - Prob. 9CYRCh. 23 - Prob. 10CYRCh. 23 - Prob. 11CYRCh. 23 - Prob. 12CYRCh. 23 - Prob. 13CYRCh. 23 - Prob. 14CYRCh. 23 - Prob. 15CYRCh. 23 - Prob. 16CYRCh. 23 - Prob. 17CYRCh. 23 - Prob. 18CYRCh. 23 - Prob. 19CYRCh. 23 - 20. Which of the following statements is false?
a....Ch. 23 - Prob. 21CYRCh. 23 - Prob. 22CYRCh. 23 - Prob. 1CYUCh. 23 - Prob. 2CYUCh. 23 - Prob. 3CYUCh. 23 - Prob. 4CYUCh. 23 - People with extremely restricted caloric intake...Ch. 23 - Prob. 1AYKACh. 23 - Prob. 2AYKACh. 23 - 3. Certain dietary supplements for weight loss...Ch. 23 - Prob. 4AYKBCh. 23 - Prob. 5AYKB
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- How many ATPs—total and net—are produced from breaking down one molecule of glucose in glycolysis?arrow_forwardOutline the two major stages of glycolysis. How many ATP molecules (overall) are generated per glucose molecule during glycolysis? Where in the cell does glycolysis occur?arrow_forwardConsider the energy budget of glycolysis as a whole a) How many ATP's are made total? b) How many ATP's are invested (ATP --> ADP + Phosphate) c) How many ATP's does glycolysis of one glucose molecule net for the cell?arrow_forward
- Does the net gain of ATP in glycolysis differ when glycogen, rather than glucose, is the starting material? If so, what is the change?arrow_forwardHow many steps in the glycolysis pathway consume ATP?arrow_forwardWhat is the immediate energy source that drives ATP synthesis by ATP Synthase during oxidative phosphorylation?arrow_forward
- What is glycolysis? How many steps are in glycolysis and what are they? What are the three key regulatory steps? Which step is irreversible and why? What are the enzymes that participate in glycolysis?arrow_forwardHow many ATP molecules are produced during glycolysis from a single molecule of glucose?arrow_forwardHow many ATPs are formed in glycolysis if you remove those used in the investment phase?arrow_forward
- Of the 36 molecules of ATP produced by the complete metabolism of glucose, how many are produced directly in glycolysis alone, that is, before the common pathway?arrow_forwardWhich reactions of glycolysis can be reversed? Which are irreversible? What is the significance of the metabolically irreversible reactions?arrow_forwardWhat steps in glycolysis generate substrate-level phosphorylation, and how many ATP molecules are generated in this way in this pathway? How does the generation of ATP by substrate-level phosphorylation differ from ATP generation by oxidative phosphorylation?arrow_forward
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