Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
8th Edition
ISBN: 9780134015187
Author: John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 21.21UKC
Each of these reactions is involved in one of the four stages of
(a) Hydrolysis of starch to produce glucose
(b) Oxidation of NADH coupled with synthesis of ATP
(c) Conversion of glucose to acetyl-CoA
(d) Oxidation of acetyl-CoA in a series of reactions where NAD+ is reduced and CO2 is produced
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Which of the following statements about the pentose phosphate pathway (PPP) is true?
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(C) Phosphopentose isomerase converts the ribose 5-phosphate made in the oxidative arm of the PPP into ribulose 5-phosphate that is used to form the ribose sugar of nucleotides.(D) The non-oxidative arm of the PPP interconverts between ribose 5-phosphate and a variety of intermediates of b-oxidation.
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The citric acid cycle is a critical sequence of reactions for energy production, which take place in the matrix of the mitochondria. The reaction cycle requires materials from the cytosol to be converted into acetyl CoA, which represents the starting point of a new cycle. Which of the following statements about acetyl CoA is true?
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(a) Acetyl CoA is recycled at the end of every cycle.
(b) Â Oxaloacetate is attached to acetyl CoA to feed the citric acid cycle.
(c) Â Triacylglycerol molecules are transported into the mitochondrial matrix and cleaved by lipases to produce acetyl CoA.
(d) Â Oxaloacetate is converted directly into acetyl CoA to feed the citric acid cycle
The functioning of a particular pathway often depends not only on control enzymes in that pathway but alsoon control enzymes of other pathways. What happens in the following pathways under the indicated conditions? Suggest what otherpathway or pathways might be influenced.(a) High ATP or NADH concentration and the citric acid cycle.(b) High ATP concentration and glycolysis.(c) High NADPH concentration and the pentose phosphate pathway.(d) High fructose-2,6-bisphosphate concentration and gluconeo genesis.
Chapter 21 Solutions
Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
Ch. 21.1 - In a cell, glucose can be oxidized via metabolic...Ch. 21.1 - Prob. 21.2KCPCh. 21.1 - Prob. 21.1CIAPCh. 21.1 - Prob. 21.2CIAPCh. 21.1 - Prob. 21.3CIAPCh. 21.1 - Prob. 21.4CIAPCh. 21.3 - Prob. 21.3PCh. 21.4 - Prob. 21.4PCh. 21.4 - Prob. 21.5PCh. 21.4 - Prob. 21.5CIAP
Ch. 21.4 - How does a cell disarm each of the ROS in CIA...Ch. 21.5 - One of the steps in lipid metabolism is the...Ch. 21.5 - Prob. 21.7PCh. 21.5 - Prob. 21.7CIAPCh. 21.5 - Prob. 21.8CIAPCh. 21.5 - Prob. 21.9CIAPCh. 21.5 - Prob. 21.10CIAPCh. 21.5 - Prob. 21.8PCh. 21.6 - Prob. 21.9PCh. 21.6 - Prob. 21.10PCh. 21.7 - Prob. 21.11PCh. 21.7 - Prob. 21.13PCh. 21.7 - Identify the participants in the citric acid cycle...Ch. 21.7 - Prob. 21.15PCh. 21.7 - Prob. 21.16KCPCh. 21.8 - Within the mitochondrion, is the pH higher in the...Ch. 21.8 - Prob. 21.18PCh. 21.8 - Prob. 21.19KCPCh. 21.8 - Prob. 21.11CIAPCh. 21.8 - Prob. 21.12CIAPCh. 21.8 - Prob. 21.13CIAPCh. 21 - Prob. 21.20UKCCh. 21 - Each of these reactions is involved in one of the...Ch. 21 - Prob. 21.22UKCCh. 21 - Prob. 21.23UKCCh. 21 - The reaction that follows is catalyzed by...Ch. 21 - Prob. 21.25UKCCh. 21 - The electron-transport chain uses several...Ch. 21 - Prob. 21.27APCh. 21 - What is the difference between an endergonic...Ch. 21 - Prob. 21.29APCh. 21 - Prob. 21.30APCh. 21 - Prob. 21.31APCh. 21 - Prob. 21.32APCh. 21 - Which of the following organisms are prokaryotes,...Ch. 21 - Label each of the following as a characteristic of...Ch. 21 - Prob. 21.35APCh. 21 - Prob. 21.36APCh. 21 - Describe in general terms the structural makeup of...Ch. 21 - Prob. 21.38APCh. 21 - Prob. 21.39APCh. 21 - Prob. 21.40APCh. 21 - Prob. 21.41APCh. 21 - Prob. 21.42APCh. 21 - Prob. 21.43APCh. 21 - Prob. 21.44APCh. 21 - What does it mean when we say that two reactions...Ch. 21 - Prob. 21.46APCh. 21 - Prob. 21.47APCh. 21 - Prob. 21.48APCh. 21 - Prob. 21.49APCh. 21 - Prob. 21.50APCh. 21 - Prob. 21.51APCh. 21 - Prob. 21.52APCh. 21 - Prob. 21.53APCh. 21 - Prob. 21.54APCh. 21 - Prob. 21.55APCh. 21 - Prob. 21.56APCh. 21 - Prob. 21.57APCh. 21 - Prob. 21.58APCh. 21 - Prob. 21.59APCh. 21 - Prob. 21.60APCh. 21 - Prob. 21.61APCh. 21 - Prob. 21.62APCh. 21 - Prob. 21.63APCh. 21 - Prob. 21.64APCh. 21 - Prob. 21.65APCh. 21 - Prob. 21.66APCh. 21 - Prob. 21.67APCh. 21 - Prob. 21.68APCh. 21 - What does the term oxidative phosphorylation mean?...Ch. 21 - Prob. 21.70APCh. 21 - Prob. 21.71APCh. 21 - Prob. 21.72APCh. 21 - Prob. 21.73APCh. 21 - Prob. 21.74APCh. 21 - Prob. 21.75APCh. 21 - Prob. 21.76APCh. 21 - Prob. 21.77CPCh. 21 - Fumarate produced in step 6 of the citric acid...Ch. 21 - With what class of enzymes are the coenzymes NAD+...Ch. 21 - Prob. 21.80CPCh. 21 - Prob. 21.81CPCh. 21 - Prob. 21.82CPCh. 21 - The mitochondrion pumps H+ from the matrix into...Ch. 21 - Prob. 21.84CPCh. 21 - Prob. 21.85CPCh. 21 - Prob. 21.86CPCh. 21 - Prob. 21.87GPCh. 21 - Prob. 21.88GPCh. 21 - Prob. 21.89GP
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