Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 18, Problem 6RE
REFLECT AND APPLY Does the net gain of ATP in glycolysis differ when glycogen, rather than glucose, is the starting material? If so, what is the change?
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Chapter 18 Solutions
Biochemistry
Ch. 18 - RECALL Why is it essential that the mechanisms...Ch. 18 - RECALL How does phosphorolysis differ from...Ch. 18 - RECALL Why is it advantageous that breakdown of...Ch. 18 - RECALL Briefly outline the role of UDPG in...Ch. 18 - RECALL Name two control mechanisms that play a...Ch. 18 - REFLECT AND APPLY Does the net gain of ATP in...Ch. 18 - REFLECT AND APPLY In metabolism,...Ch. 18 - Prob. 8RECh. 18 - BIOCHEMICAL CONNECTIONS You are planning to go on...Ch. 18 - BIOCHEMICAL CONNECTIONS Would eating candy bars,...
Ch. 18 - Prob. 11RECh. 18 - Prob. 12RECh. 18 - REFLECT AND APPLY A researcher claims to have...Ch. 18 - REFLECT AND APPLY What is the source of the energy...Ch. 18 - Prob. 15RECh. 18 - Prob. 16RECh. 18 - Prob. 17RECh. 18 - Prob. 18RECh. 18 - Prob. 19RECh. 18 - RECALL What reactions in this chapter require...Ch. 18 - RECALL Which steps of glycolysis are irreversible?...Ch. 18 - RECALL What is the role of biotin in...Ch. 18 - RECALL How does the role of glucose-6-phosphate in...Ch. 18 - REFLECT AND APPLY Avidin, a protein found in egg...Ch. 18 - REFLECT AND APPLY How does the hydrolysis of...Ch. 18 - Prob. 26RECh. 18 - Prob. 27RECh. 18 - Prob. 28RECh. 18 - Prob. 29RECh. 18 - Prob. 30RECh. 18 - Prob. 31RECh. 18 - REFLECT AND APPLY How can different time scales...Ch. 18 - REFLECT AND APPLY How do the control mechanisms in...Ch. 18 - Prob. 34RECh. 18 - Prob. 35RECh. 18 - Prob. 36RECh. 18 - REFLECT AND APPLY How can the synthesis and...Ch. 18 - REFLECT AND APPLY How is it advantageous for...Ch. 18 - Prob. 39RECh. 18 - Prob. 40RECh. 18 - Prob. 41RECh. 18 - Prob. 42RECh. 18 - RECALL What roles do glucagon and epinephrine play...Ch. 18 - Prob. 44RECh. 18 - RECALL List three differences in structure or...Ch. 18 - RECALL What are four possible metabolic fates of...Ch. 18 - BIOCHEMICAL CONNECTIONS What is the connection...Ch. 18 - Prob. 48RECh. 18 - RECALL What is a major difference between...Ch. 18 - Prob. 50RECh. 18 - Prob. 51RECh. 18 - Prob. 52RECh. 18 - REFLECT AND APPLY Suggest a reason why a different...Ch. 18 - REFLECT AND APPLY Explain how the pentose...Ch. 18 - REFLECT AND APPLY Why is it reasonable to expect...Ch. 18 - REFLECT AND APPLY How would it affect the...
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- REFLECT AND APPLY How does the hydrolysis of fructose-1,6-bisphosphate bring about the reversal of one of the physiologically irreversible steps of glycolysis?arrow_forwardREFLECT 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 APPLLY High levels of glucose-6-phosphate inhibit glycolysis. If the concentration of glucose-6-phosphate decreases, activity is restored. Why?arrow_forward
- REFLECT AND APPLY Explain how glycogen phosphorylase is controlled allosterically and by covalent modification.arrow_forwardREFLECT AND APPLY What is the relationship between a transition-state analog and the induced-fit model of enzyme kinetics?arrow_forwardREFLECT AND APPLY The malate-aspartate shuttle yields about 2.5 moles of ATP for each mole of cytosolic NADH. Why does nature use the glycerol-phosphate shuttle, which yields only about 1.5 moles of ATP?arrow_forward
- REFLECT AND APPLLY What should be the net ATP yield for glycolysis when fructose, mannose, and galactose are used as the starting compounds? Justify your answer.arrow_forwardREFLECT AND APPLY (a) Where in an earlier chapter have we en- countered something comparable to the action of the acyl carrier protein (ACP) of fatty acid synthesis? (b) What is a critical feature of the action of the ACP?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_forward
- REFLECT AND APPLY What is the source of the energy needed to incorporate glucose residues into glycogen? How is it used?arrow_forwardREFLECT AND APPLLY What is the metabolic advantage of having both hexokinase and glucokinase to phosphorylate glucose?arrow_forwardREFLECT AND APPLY There is a reaction in carbohydrate meta- bolism in which glucose-6-phosphate reacts with NADP+ to give 6-phosphoglucono- -lactone and NADPH. In this reaction, which substance is oxidized, and which is reduced? Which substance is the oxidizing agent, and which is the reducing agent?arrow_forward
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