Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
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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Chapter 8 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (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 are the key features of enzyme regulation?arrow_forward1. Shown below is a metabolic pathway: Es E E4 E1 E2 A - B - C - D E3 E6 Q- R – S E7 Es Suppose we have too much of "S" in the cell, please answer the following questions, with regards to feedback inhibition: a) Which enzyme is most likely to be regulated? b) Which substance will act as the 'regulator'? c) Name the "site" where this 'regulator' will bind to the enzyme: d) Is this substance (from #b), a homotropic or heterotropic modulator?arrow_forwardTo what extent can metabolic pathways beconsidered reversible? Why?arrow_forward
- What does it mean to say that an enzyme- catalyzed reaction is either enzyme limited or substrate -limited?arrow_forwardHow 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_forward
- Discuss 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_forwardWhy is reciprocal regulation a key feature of glucose metabolism?arrow_forwardList two means by which enzyme activity is directly regulated.arrow_forward
- With respect to cell metabolism, what is “energy coupling”? Give a very simple example.arrow_forwardDescribe the mechanism of feedback inhibition and the role this process plays in controlling enzyme activity.arrow_forwardWhy must metabolic pathways be regulated? Cite three ways by which metabolic pathways are regulated.arrow_forward
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