Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 8, Problem 8.5CR
Summary Introduction
To determine: The role of feedback inhibition and allosteric regulation in a cells
Concept introduction: There would be occurrence of chemical chaos (disorder), if the metabolic pathway of a cell operates simultaneously, so they are operated distinctly. The cell possess an ability to regulate the pathways (metabolic) by controlling the activity of various enzymes. This is done by switching off or on the gene, which encodes for particular enzymes. Allosteric regulation and feedback inhibition are those mechanisms.
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What type of enzyme regulation is the most readily (quickly) reversible?
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Chapter 8 Solutions
Campbell Biology (10th Edition)
Ch. 8.1 - MAKE CONNECTIONS How does the second law of...Ch. 8.1 - Describe the forms of energy found in an apple as...Ch. 8.1 - WHAT IF? If you place a teaspoon of sugar in the...Ch. 8.2 - Cellular respiration uses glucose and oxygen,...Ch. 8.2 - VISUAL SKILLS How would the processes of...Ch. 8.2 - WHAT IF? Some nighttime partygoers wear glow-in-...Ch. 8.3 - How does ATP typically transfer energy from an...Ch. 8.3 - Prob. 2CCCh. 8.3 - MAKE CONNECTIONS Does Figure 8.11a show passive...Ch. 8.4 - Many spontaneous reactions occur very slowly. Why...
Ch. 8.4 - Prob. 2CCCh. 8.4 - WHAT IF? Malonate is an inhibitor of the enzyme...Ch. 8.4 - Prob. 4CCCh. 8.5 - How do an activator and an inhibitor have...Ch. 8.5 - Prob. 2CCCh. 8 - Explain how the highly ordered structure of a cell...Ch. 8 - Explain the meaning of each component in the...Ch. 8 - Describe the ATP cycle: How is ATP used and...Ch. 8 - How do both activation energy barriers and enzymes...Ch. 8 - Prob. 8.5CRCh. 8 - Choose the pair of terms that correctly completes...Ch. 8 - Prob. 2TYUCh. 8 - Which of the following metabolic processes can...Ch. 8 - Prob. 4TYUCh. 8 - Some bacteria art metabolically active in hot...Ch. 8 - If an enzyme is added to a solution where its...Ch. 8 - Prob. 7TYUCh. 8 - EVOLUTION CONNECTION Some people argue that...Ch. 8 - Prob. 9TYUCh. 8 - WRITE ABOUT A THEME: ENERGY AND MATTER Life...Ch. 8 - Prob. 11TYU
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- What is the major activator (non-allosteric, direct-activator) of phosphorylase? How does this activator activate phosphorylase (type of regulation)?arrow_forwardWhat are the key features of enzyme regulation?arrow_forwardWhy is the regulation of metabolism through the control of enzymeactivity an extremely complex process?arrow_forward
- Why does a phosphorylation/dephosphorylation system allow more sensitive regulation of a metabolic process than a simple allosteric system?arrow_forwardTo what extent can metabolic pathways beconsidered reversible? Why?arrow_forwardWhat does it mean to say that an enzyme- catalyzed reaction is either enzyme limited or substrate -limited?arrow_forward
- How is gluconeogenesis powered in the cell? How can I describe the relevant steps concisely? Do I talk about the energetics of the chemical reaction involved, or do I just expand on the different steps involved in the process of gluconeogenesis?arrow_forwardWhat is metabolic coupling?arrow_forwardDiscuss the role of enzymes in metabolic regulation by describing the following five mechanisms.11.1Cascade systems11.2 Futile cycle11.3Cellular compartmentalization 11.4 Covalent modification11.5 Zymogensarrow_forward
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