Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 25, Problem 4RQ
Summary Introduction
To determine: The three sources of glucose that can be metabolized to ATP directly or indirectly
Introduction: Energy is required by cells to carry out metabolic activities. Cells can do so by yielding the energy stored in glucose molecules. This process is called glucose
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Which of the following cellular concentrations would be likely to increase the rate of glycolysis?
Low AMP levels
High glucagon levels
✓Low fructose-2,6-bisphosphate levels
High AMP levels
High phosphoenolpyruvate levels
Low ATP levels
Indicate whether the following statements are true or false:-
a) The pentose phosphate pathway of glucose oxidation can lead to the release of energy.
b) NAD + is a coenzyme of transketolase.
Explain Anaerobic versus aerobic metabolism of glucose.
Chapter 25 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 25.2 - If venous PO2 decreases as exercise intensity...Ch. 25.3 - In Figure 25.8b, why does the line for mean blood...Ch. 25.5 - The active vasodilator nerves to the skin secrete...Ch. 25 - Name the two muscle compounds that store energy in...Ch. 25 - Prob. 2RQCh. 25 - Prob. 3RQCh. 25 - Prob. 4RQCh. 25 - Prob. 5RQCh. 25 - What is meant by the term oxygen deficit, and how...Ch. 25 - Prob. 7RQ
Ch. 25 - In endurance events, body temperature can reach...Ch. 25 - Prob. 9RQCh. 25 - Prob. 10RQCh. 25 - Prob. 11RQCh. 25 - Prob. 12RQCh. 25 - Match the following brain areas with the...Ch. 25 - Specify whether each of the following parameters...Ch. 25 - Why doesnt increased venous return during exercise...Ch. 25 - Diagram the three theories that explain why the...Ch. 25 - Prob. 17RQCh. 25 - Explain how exercise decreases blood glucose in...Ch. 25 - Prob. 19RQCh. 25 - Prob. 20RQCh. 25 - The following graph shows left ventricular...
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- a) How many moles of ATP can be gained from the catabolism of the following substrates to pyruvate? 2 Mole mannose 2 Mole lactose mole glycerol. b) Name three metabolic processes in the cell that are enhanced and two that are inhibited in response to the hormone insulinarrow_forwardHow does the yield of ATP from complete oxidation of onemolecule of glucose in muscle and brain differ from that in liver,heart, and kidney? What is the underlying reason for this difference?arrow_forwardHow many total (NOT NET) molecules of ATP are synthesized from ADP via glycolysis of a single molecule of glucose? Explain by detailing the reactions (steps) involved.arrow_forward
- Explain the process of break down of glucose by various pathways.arrow_forwardXylulose-5-phosphate is an intermediate in the pentose phosphate pathway (see Figure). As xylulose-5-phosphate levels rise in response to excess glucose shunting through the pentose phosphate pathway, does flux through glycolysis increase or decrease?arrow_forwardWhat should be the net yield of ATP in glycolysis when endogenous glycogen is used? Give answer as a numeric value.arrow_forward
- How many ATP are produced from a triglyceride containing three 14 carbon fatty acids? NOTE: Assume that glycerol is converted to Glyceraldehyde-3-Phosphate (step 6 of glycolysis).arrow_forwardDescribe where the following nutrient molecules enter the metabolic pathway of cellular respiration: glucose, the breakdown products of triglycerides, and amino acids.arrow_forwardFor the two conditions below regarding Glycogenolysis, please explain how glucose release would be affected. Would there be an increased, decrease, or no change compared to “normal” conditions? Also explain which enzyme or reaction is affected and why. Condition 1: the debranching enzyme is inhibited Condition 2: free inorganic phosphate is chelatedarrow_forward
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