Biochemistry
Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 17, Problem 8P

How Is Metabolism Regulated? (Integrates with Chapter 15.) Metabolic regulation is achieved via regulating enzyme activity in three prominent ways: allosteric regulation, covalent modification, and enzyme synthesis and degradation. Which of the.se three modes of regulation is likely to be the quickest; which the .slowest? For each of these general enzyme regulatory mechanisms, cite conditions in which cells might employ that mode in preference to either of the other two.

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Metabolic flux is regulated by both availability of substrates and level of enzyme activity. Match the mechanism by which enzyme activity is regulated (A, B, C) with a specific example of this type of regulation (1, 2, 3, 4, 5, 6). Each mechanism is associated with two specific examples. Mechanism of Regulation A. Catalytic activity B. Compartmentation C. Enzyme levels A:1,5; B:3,4; C:2,6 OA:1,5; B:3,6; C:2,4 A:2,5: B:3.4. C.16 Example of Regulation 1. covalent modification 4. subcellular localization 2. protein synthesis 5. allosteric control 3. tissue localization 6. gene transcription
Discuss the role of enzymes in metabolic regulation by describing the following  mechanisms.11.1Cellular compartmentalization 11.2 Covalent modification11.3  Zymogens
Please answer these biochemistry questions and briefly explain 1. Which is false about metabolic regulation? A: reactions with a large negative delta G are likely to be regulated B: reactions that require ATP are regulated C: glucagon and epineprine both stimulate glycogen breakdown D: all steps of all metabolic processes under strict regulation I picked D since all steps require sple extent of regulation however, "strict" regulation is limited to the irreversible steps 2. which is not a redox reaction in electron transport chain? A: Fe-S accepts e- from NADH B: reiske protein accepts e- from QH2 3. true or false: proton motive force is created through pumping H+ from matrix to inner membrane I put false, isnt the opposite true? pumping H+ from IMM to matrix
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