Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Textbook Question
Chapter 7, Problem 29RE
REFLECT AND APPLY Explain how glycogen phosphorylase is controlled allosterically and by covalent modification.
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Chapter 7 Solutions
Biochemistry
Ch. 7 - RECALL What features distinguish enzymes that...Ch. 7 - RECALL What is the metabolic role of aspartate...Ch. 7 - RECALL What molecule acts as a positive effector...Ch. 7 - RECALL Is the term KM used with allosteric...Ch. 7 - Prob. 5RECh. 7 - Prob. 6RECh. 7 - RECALL What is a homotropic effect? What is a...Ch. 7 - RECALL What is the structure of ATCase?Ch. 7 - RECALL How is the cooperative behavior of...Ch. 7 - RECALL Does the behavior of allosteric enzymes...
Ch. 7 - RECALL Does the behavior of allosteric enzymes...Ch. 7 - RECALL Explain what is meant by K0.5.Ch. 7 - REFLECT AND APPLY Explain the experiment used to...Ch. 7 - RECALL Distinguish between the concerted and...Ch. 7 - RECALL Which allosteric model can explain negative...Ch. 7 - RECALL With the concerted model, what conditions...Ch. 7 - Prob. 17RECh. 7 - Prob. 18RECh. 7 - Prob. 19RECh. 7 - Prob. 20RECh. 7 - Prob. 21RECh. 7 - BIOCHEMICAL CONNECTIONS How does Valium work?Ch. 7 - Prob. 23RECh. 7 - Prob. 24RECh. 7 - RECALL What is the function of a protein kinase?Ch. 7 - RECALL What amino acids are often phosphorylated...Ch. 7 - REFLECT AND APPLY What are some possible...Ch. 7 - REFLECT AND APPLY Explain how phosphorylation is...Ch. 7 - REFLECT AND APPLY Explain how glycogen...Ch. 7 - Prob. 30RECh. 7 - Prob. 31RECh. 7 - RECALL Name three proteins that are subject to the...Ch. 7 - Prob. 33RECh. 7 - RECALL What are caspases?Ch. 7 - REFLECT AND APPLY Explain why cleavage of the bond...Ch. 7 - REFLECT AND APPLY Why is it necessary or...Ch. 7 - Prob. 37RECh. 7 - Prob. 38RECh. 7 - Prob. 39RECh. 7 - RECALL What are the two essential amino acids in...Ch. 7 - RECALL Why does the enzyme reaction for...Ch. 7 - REFLECT AND APPLY Briefly describe the role of...Ch. 7 - REFLECT AND APPLY Explain the function of...Ch. 7 - REFLECT AND APPLY Explain why the second phase of...Ch. 7 - Prob. 45RECh. 7 - REFLECT AND APPLY An inhibitor that specifically...Ch. 7 - REFLECT AND APPLY What properties of metal ions...Ch. 7 - RECALL In biochemistry mechanisms, what group is...Ch. 7 - Prob. 49RECh. 7 - REFLECT AND APPLY Explain the difference between...Ch. 7 - Prob. 51RECh. 7 - Prob. 52RECh. 7 - Prob. 53RECh. 7 - REFLECT AND APPLY What is the relationship between...Ch. 7 - Prob. 55RECh. 7 - BIOCHEMICAL CONNECTIONS Why can cocaine addiction...Ch. 7 - Prob. 57RECh. 7 - Prob. 58RECh. 7 - RECALL How are coenzymes related to vitamins?Ch. 7 - RECALL What type of reaction uses vitamin B6?Ch. 7 - Prob. 61RECh. 7 - Prob. 62RECh. 7 - Prob. 63RECh. 7 - BIOCHEMICAL CONNECTIONS What are some of the ways...Ch. 7 - Prob. 65RECh. 7 - Prob. 66RECh. 7 - Prob. 67RECh. 7 - Prob. 68RECh. 7 - Prob. 69RECh. 7 - Prob. 70RECh. 7 - Prob. 71RECh. 7 - Prob. 72RECh. 7 - Prob. 73RE
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- REFLECT AND APPLY What is the relationship between a transition-state analog and the induced-fit model of enzyme kinetics?arrow_forwardREFLECT AND APPLY A researcher claims to have discovered a variant form of glycogen. The variation is that it has very few branches (every 50 glucose residues or so) and that the branches are only three residues long. Is it likely that this discovery will be confirmed by later work?arrow_forwardREFLECT AND APPLY In the mitochondrion is a short-chain carnitine acyltransferase that can take acetyl groups from acetyl-CoA and transfer them to carnitine. How might this be related to lipid biosynthesis?arrow_forward
- REFLECT AND APPLY How can the synthesis and breakdown of fructose-2,6-bisphosphate be controlled independently?arrow_forwardREFLECT AND APPLY Explain how phosphorylation is involved in the function of the sodiumpotassium ATPase.arrow_forwardREFLECT AND APPLY Would you expect an irreversible inhibitor of an enzyme to be bound by covalent or by non-covalent interactions? Why?arrow_forward
- REFLECT AND APPLY Explain how the pentose phosphate path- way can respond to a cells need for ATP, NADPH, and ribose-5- phosphate.arrow_forwardREFLECT AND APPLY Avidin, a protein found in egg whites, binds to biotin so strongly that it inhibits enzymes that require biotin. What is the effect of avidin on glycogen formation? On gluconeogenesis? On the pentose phosphate pathway?arrow_forwardREFLECT AND APPLLY What is the metabolic advantage in the conversion of glucose to lactate, in which there is no net oxidation or reduction?arrow_forward
- REFLECT AND APPLY How is it advantageous for animals to convert ingested starch to glucose and then to incorporate the glucose into glycogen?arrow_forwardREFLECT AND APPLY When we compare the binding of I and of S to the enzyme in a mixed noncompetitive inhibitor, we assumed that the binding of I decreased the affinity of the enzyme for S. What would happen if the opposite were true?arrow_forwardREFLECT AND APPLY What is the source of the energy needed to incorporate glucose residues into glycogen? How is it used?arrow_forward
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