Biochemistry (9th Edition)

Chapter 23

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Symbiotic organisms located in the roots plants ... more

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Fixation occurs by nitrogenase reaction. ... more

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H2 and N2 chemically synthesize NH3. ; Haber's ... more

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; Nitrogen fixation is the phenomenon by which ... more

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Ferredoxin, dinitrogenase reductase, and ... more

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The biosynthetic pathways producing amino acids ... more

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Feedback inhibition mechanism slacks the ... more

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Metabolic cycles are needed for cellular ... more

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Glutamate is produced from -ketoglutarate and the ... more

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; Many amino acid biosynthetic pathways are ... more

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; Glutamate is formed from and -ketoglutarate by... more

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The glutamine synthetase enzyme catalyzes the ... more

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; Pyridoxal phosphate forms a Schiff base with ... more

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 -adenosylmethionine and tetrahydrofolate. ; ... more

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  ; Folic acid is composed of three components: a ... more

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Since additional methionine is required to ... more

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Glutamate acts as the fundamental donor of the ... more

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; The methyl group is attached with the sulfur ... more

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Sulfanilamide acts as a competitive inhibitor in ... more

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Methionine contains a divalent sulfur atom bearing... more

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Essential amino acids are those amino acids that ... more

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In phenylketonuria patients:1. Arginine 2.... more

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Ornithine, aspartate, citrulline, ... more

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 Fumarate and aspartate are the common aompounds ... more

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Ornithine has a similar structure to lysine, with ... more

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Aspartate and argininosuccinate.  ; Urea cycle ... more

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FourTwo are used to form carbamoyl-phosphate and ... more

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By the action of N-acetylglutamate. ; Carbamoyl ... more

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When an increase in the levels of arginine is ... more

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Glutamate brings ammonia (NH3) groups to the ... more

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Pyruvate and oxaloacetateAcetoacetate or acetyl-... more

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Ammonotelic animals like fish and other aquatic ... more

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Bird O would excrete excess nitrogen as urea as ... more

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Arginine generated in the urea cycle is readily ... more

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When a person eats protein-rich foods or foods, ... more

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Excessive running and exercise cause the amino ... more

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The urea cycle requires many enzymes that are ... more

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Another name for folic acid is vitamin B9. ... more

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Two of the nitrogen atoms in the purine ring come ... more

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In inosine, the sixth carbon of the purine is a ... more

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The molecule tetrahydrofolate is playing the role ... more

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IMP to GMP conversion produces one NADH molecule, ... more

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The biosynthesis of nucleotides is controlled by ... more

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The purine salvage process that results in the GMP... more

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Gout is a disease which is caused by the ... more

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In pyrimidine, the rings are brought together ... more

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The fate of purine metabolism is uric acid, AMP, ... more

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Thioredoxin and thioredoxin reductase are two ... more

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Fluorouracil is an inhibitor of thymidylate ... more

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FdUMP and methotrexate inhibit the growth of fast ... more

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