Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 15, Problem 18RQ
Summary Introduction
To review:
The excretion of purine
Introduction:
Nucleotides are the precursors of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). They are of two types, purines and pyrimidines. Purines are guanine and adenine, while pyrimidines are cytosine, uracil, and thymine. The turnover of
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A metabolic pathway that functions in both anabolic andcatabolic processes is called an _____________________pathway.
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Chapter 15 Solutions
Biochemistry: The Molecular Basis of Life
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- The Hatch–Slack pathway is an alternative name for _____________.arrow_forwardQuestion 9 The nucleoside monophosphates are seen in metabolic pathways because their phosphoric anhydride bonds can be hydrolyzed off for energy. A) True B) Falsearrow_forwardWhen a purine or pyrimidine is linked through a b-Nglycosidic link to C-1 of a pentose, the molecule is calleda _________________________.arrow_forward
- In eukaryotic cells, the citric acid cycle occurs in the _____________.arrow_forwardThe cleavage of fructose-1,6-bisphosphate to glyceraldehyde3-phosphate and dihydroxyacetone phosphate is an exampleof an __________________ reactionarrow_forwardThe fatty acid tails in the plasma membrane are ______________ which means they are _______________.arrow_forward
- Question 1. a) Explain how 5 specific fatty acids ultimately generate specific classes of prostaglandins and leukotrienes that are involved in blood pressure, platelet aggregation and inflammation.b) Indicate and explain the specific effects of each of these classes of prostaglandins and leukotrienes on blood pressure, platelet aggregation and inflammation.c) Identify which foods, functional foods and nutraceuticals provide one or more of these 5 fatty acids.arrow_forwardThe antifungal drug nystatin kills fungal cells in part through formation of membrane pores that cause K+ leakage. To what class of membrane-inserting molecules does nystatin belong?arrow_forwardPKU is an abbreviation for what disorder? What are the symptoms of PKU? How can PKU be treated for a nearly normal life?arrow_forward
- Orotic aciduria is an autosomal recessive disease caused by a deficiency of the enzyme UMP synthase (a bifunctional protein composed of orotate pyrophosphoribosyl transferase and OMP decarboxylase activities). What symptom accounts for the disease’s name? Suggest a possible treatment.arrow_forwardWhat is proteorhodopsin and why is it so named?arrow_forwardWhat is the end product of catabolism of the pyrimidine base thymine? What circumstances cause excess amounts of this end product, and why doesn’t this molecule (unlike uric acid, the end product of purine catabolism) cause a gout-like illness?arrow_forward
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