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 19, Problem 47RE
REFLECT AND APPLY The intermediates of glycolysis are phosphorylated, but those of the citric acid cycle are not. Suggest a reason why.
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Chapter 19 Solutions
Biochemistry
Ch. 19 - RECALL Which pathways are involved in the...Ch. 19 - RECALL How many ATPs can be produced from one...Ch. 19 - RECALL What are the different names used to...Ch. 19 - Prob. 4RECh. 19 - Prob. 5RECh. 19 - Prob. 6RECh. 19 - Prob. 7RECh. 19 - RECALL What three molecules produced during the...Ch. 19 - RECALL How many enzymes are involved in mammalian...Ch. 19 - RECALL Briefly describe the dual role of lipoic...
Ch. 19 - Prob. 11RECh. 19 - Prob. 12RECh. 19 - Prob. 13RECh. 19 - Prob. 14RECh. 19 - RECALL Why is the reaction catalyzed by citrate...Ch. 19 - RECALL What does it mean when an enzyme has the...Ch. 19 - Prob. 17RECh. 19 - RECALL With respect to stereochemistry, what is...Ch. 19 - Prob. 19RECh. 19 - Prob. 20RECh. 19 - Prob. 21RECh. 19 - RECALL What are the similarities and differences...Ch. 19 - Prob. 23RECh. 19 - Prob. 24RECh. 19 - Prob. 25RECh. 19 - RECALL Why can we say that production of a GTP is...Ch. 19 - Prob. 27RECh. 19 - RECALL ATP is a competitive inhibitor of NADH...Ch. 19 - RECALL Is the conversion of fumarate to malate a...Ch. 19 - REFLECT AND APPLY We have seen one of the four...Ch. 19 - Prob. 31RECh. 19 - Prob. 32RECh. 19 - Prob. 33RECh. 19 - Prob. 34RECh. 19 - REFLECT AND APPLY How does an increase in the...Ch. 19 - REFLECT AND APPLY How does an increase in the...Ch. 19 - Prob. 37RECh. 19 - Prob. 38RECh. 19 - Prob. 39RECh. 19 - Prob. 40RECh. 19 - REFLECT AND APPLY How could the expression milking...Ch. 19 - Prob. 42RECh. 19 - Prob. 43RECh. 19 - Prob. 44RECh. 19 - BIOCHEMICAL CONNECTIONS Why is it possible for...Ch. 19 - RECALL Describe the various purposes of the citric...Ch. 19 - REFLECT AND APPLY The intermediates of glycolysis...Ch. 19 - Prob. 48RECh. 19 - REFLECT AND APPLY Many soft drinks contain citric...Ch. 19 - RECALL NADH is an important coenzyme in catabolic...Ch. 19 - BIOCHEMICAL CONNECTIONS What are the anaplerotic...Ch. 19 - REFLECT AND APPLY Why is acetyl-CoA considered the...Ch. 19 - Prob. 53RE
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- REFLECT AND APPLY Explain how glycogen phosphorylase is controlled allosterically and by covalent modification.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 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 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_forwardREFLECT AND APPLY Comment on the fact that the reduction of pyruvate to lactate, catalyzed by lactate dehydrogenase, is strongly exergonic (recall this from Chapter 15), even though the standard free-energy change for the half reaction Pyruvate+2H++2eLactate is positive (G=36.2kJmol1=8.8kcalmol1), indicating an endergonic reaction.arrow_forward
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- REFLECT AND APPLY How could the expression milking it for all its worth relate to the citric acid cycle?arrow_forwardREFLECT 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 Suggest a reason why a different reducing agent (NADPH) is used in anabolic reactions rather than NADH, which plays a role in catabolic ones.arrow_forward
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