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 21, Problem 35RE
RECALL Why are linoleate and linolenate considered essential fatty acids? What step in production of polyunsaturated fatty acids are mammals unable to perform?
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Chapter 21 Solutions
Biochemistry
Ch. 21 - REFLECT AND APPLY (a) The major energy storage...Ch. 21 - RECALL What is the difference between...Ch. 21 - RECALL How are lipases activated hormonally?Ch. 21 - RECALL What is the metabolic purpose of linking a...Ch. 21 - RECALL Outline the role of carnitine in the...Ch. 21 - RECALL What is the difference between the type of...Ch. 21 - RECALL Draw a six-carbon saturated fatty acid and...Ch. 21 - REFLECT AND APPLY Why does the degradation of...Ch. 21 - REFLECT AND APPLY Given the nature of the hormonal...Ch. 21 - RECALL Compare the energy yields from the...
Ch. 21 - RECALL Which generates more ATPthe processing of...Ch. 21 - MATHEMATICAL Calculate the ATP yield for the...Ch. 21 - REFLECT AND APPLY It is frequently said that...Ch. 21 - RECALL Describe briefly how -oxidation of an...Ch. 21 - RECALL You hear a fellow student say that the...Ch. 21 - RECALL What are the unique enzymes needed to...Ch. 21 - RECALL What are the unique enzymes needed to...Ch. 21 - MATHEMATICAL Calculate the net ATP yield from the...Ch. 21 - MATHEMATICAL Calculate the net ATP yield from...Ch. 21 - MATHEMATICAL Calculate the net ATP yield from...Ch. 21 - REFLECT AND APPLY How many cycles of -oxidation...Ch. 21 - REFLECT AND APPLY It has been stated many times...Ch. 21 - RECALL Under what conditions are ketone bodies...Ch. 21 - RECALL Briefly outline the reactions involved in...Ch. 21 - REFLECT AND APPLY Why might a doctor smell the...Ch. 21 - REFLECT AND APPLY Why might a person who is an...Ch. 21 - REFLECT AND APPLY A friend who is trying to lose...Ch. 21 - RECALL Compare and contrast the pathways of fatty...Ch. 21 - RECALL Outline the steps involved in the...Ch. 21 - RECALL What is the metabolic importance of...Ch. 21 - RECALL In fatty acid degradation, we encounter...Ch. 21 - RECALL How are the two redox reactions of...Ch. 21 - RECALL How is ACP similar to coenzyme A? How is it...Ch. 21 - RECALL What is the purpose of having ACP as a...Ch. 21 - RECALL Why are linoleate and linolenate considered...Ch. 21 - REFLECT AND APPLY Is it possible to convert fatty...Ch. 21 - REFLECT AND APPLY What is the role of citrate in...Ch. 21 - REFLECT AND APPLY In the mitochondrion is a...Ch. 21 - REFLECT AND APPLY In fatty acid synthesis,...Ch. 21 - REFLECT AND APPLY (a) Where in an earlier chapter...Ch. 21 - RECALL What is the source of the glycerol in...Ch. 21 - RECALL What is the activating group used in the...Ch. 21 - RECALL What are the differences between synthesis...Ch. 21 - RECALL How are isoprene units important in...Ch. 21 - RECALL A cholesterol sample is prepared using...Ch. 21 - Prob. 46RECh. 21 - Prob. 47RECh. 21 - Prob. 48RECh. 21 - Prob. 49RECh. 21 - REFLECT AND APPLY A drug that reduces blood...Ch. 21 - RECALL What role does neuropeptide Y play in...Ch. 21 - Prob. 52RECh. 21 - Prob. 53RECh. 21 - Prob. 54RECh. 21 - RECALL What is the connection between insulin and...
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- RECALL Why is it advantageous that breakdown of glycogen gives rise to glucose-6-phosphate rather than to glucose?arrow_forwardREFLECT AND APPLY Glycogen is highly branched. What advantage, if any, does this provide an animal?arrow_forwardREFLECT AND APPLY Consider the structures of arabinose and ribose. Explain why nucleotide derivatives of arabinose, such as ara-C and ara-A, are effective metabolic poisons.arrow_forward
- REFLECT AND APPLY Suggest a reason why the cell membranes of bacteria grown at 20C tend to have a higher proportion of unsaturated fatty acids than the membranes of bacteria of the same species grown at 37C. In other words, the bacteria grown at 37C have a higher proportion of saturated fatty acids in their cell membranes.arrow_forwardREFLECT AND APPLY What is the source of the energy needed to incorporate glucose residues into glycogen? How is it used?arrow_forwardRECALL What are the unique enzymes needed to -oxidize a poly- unsaturated fatty acid?arrow_forward
- REFLECT AND APPLY It has been stated many times that fatty acids cannot yield a net gain in carbohydrates. Why can odd-chain fatty acids be thought to break this rule to a small extent?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 An amylose chain is 5000 glucose units long. At how many places must it be cleaved to reduce the average length to 2500 units? To 1000 units? To 200 units? What percentage of the glycosidic links are hydrolyzed in each case? (Even partial hydrolysis can drastically alter the physical properties of polysaccharides and thus affect their structural role in organisms.)arrow_forward
- RECALL Why is a Lineweaver-Burk plot useful in analyzing kinetic data from enzymatic reactions?arrow_forwardREFLECT AND APPLY Suggest a reason why animals that live in cold climates tend to have higher proportions of polyunsaturated fatty acid residues in their lipids than do animals that live in warm climates.arrow_forwardREFLECT AND APPLY Albert Szent-Gyorgi, a pioneer in early photosynthesis research, stated, What drives life is a little electric current, kept up by the sunshine. What did he mean by this?arrow_forward
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