Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 4, Problem 10RQ
Why must glucose be “primed” with a high energy phosphate bond before it can be degraded in the glycolytic pathway?
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Why are there reversible steps in the glycolytic pathway? Explain why they all be could not be irreversible?
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Chapter 4 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 4 - State the first and second laws of thermodynamics....Ch. 4 - Explain what is meant by free energy in a system....Ch. 4 - Many biochemical reactions proceed slowly unless...Ch. 4 - What happens in the formation of an...Ch. 4 - Explain three ways that enzymes may be regulated...Ch. 4 - What is meant by a high-energy bond, and why might...Ch. 4 - Although ATP supplies energy to an endergonic...Ch. 4 - What is an oxidation-reduction reaction and why...Ch. 4 - Give an example of a final electron acceptor found...Ch. 4 - Why must glucose be primed with a high energy...
Ch. 4 - What happens to the electrons removed during the...Ch. 4 - Why is acetyl-CoA considered a strategic...Ch. 4 - Why are oxygen molecules important in oxidative...Ch. 4 - Explain how animals can generate ATP without...Ch. 4 - Why are animal fats sometimes called the king of...Ch. 4 - The breakdown of amino acids yields two products:...Ch. 4 - Explain the relationship between the amount of...Ch. 4 - Prob. 1FFT
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- What enzyme will not be used if the oxidative portion of the pentose phosphate pathway is operating to produce ribose 5-phosphate? Ribulose 5-phosphate isomerase 6-phosphoglucono-lactonase 6-phosphogluconate dehydrogenase Transaldolasearrow_forwardWhat is the effect on the biosynthetic pathways if the oxidative branch of a person’s pentose phosphate pathway is inactive? What effect would it have on the glycolytic pathway?arrow_forwardHow does the hydrolysis of fructose-1,6- bisphosphate bring about the reversal of one of the physiologically irreversible steps of glycolysis?arrow_forward
- Please explain the concept of a "feed-forward" mechanism and provide an example of this in the glycolytic pathway.arrow_forwardWhat is the glycolytic substrate responsible for the entry of Mannose in the preparatory stage of glycolysis? How?arrow_forwardWhat enzyme can catalyze the committed step of the pentose phosphate pathway? Please choose one phosphopentose isomerase 6-phosphogluconate dehydrogenase lactonase phosphofructokinase glucose 6-phosphate dehydrogenasearrow_forward
- Why is the formation of fructose1,6bisphosphate a step in which control is likely to be exercised in the glycolytic pathway?arrow_forwardThe conversion of 1 mol of fructose 1,6-bisphosphate to 2 mol of pyruvate by the glycolytic pathway results in what type of net formation?arrow_forwardStep 4 of the pentose phosphate pathway converts ribulose-5-phosphate to ribose-5-phosphate. Which glycolytic reaction does this reaction resemble and what type of enzyme catalyzes it?arrow_forward
- In the first stage of glycolysis, fructose-1,6-bisphosphate iscleaved to form glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. The latter molecule can then be converted to glyceraldehyde-3-phosphate. Illustrate themechanisms whereby these reactions occurarrow_forwardIdentify the following as a characteristic of one or more following process: glycolysis, glycogenesis, Glycogenolysis, and gluconeogenesis. 1. Glucose 6-phosphate is the initial reactant 2. Glucose is the final product 3. Glucose 6-phosphate is produced in the first step 4. UTP is involved in the process 5. ADP is converted to ATP in this processarrow_forwardWhy isn’t the hexokinase step the commitment step for glycolysis even though it is the first step and is irreversible?arrow_forward
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