homework lecture 13

homework lecture 13 - a. Glutamate b. Corresponding alpha...

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Nitrogen Fixation and amino acid synthesis 1. The process of producing NO 3 - from NH 4 + is called: a. Nitrogen fixation b. Nitrification c. Denitrification d. None of the above 2. Which is the important coenzyme that allows N 2 to become NH 3 a. Ferredoxin b. Flavodoxin c. Molybdenum-iron d. Iron-sulfur 3. Why is it so hard to study nitrogenase in nitrogen fixing bacteria? a. Because the protein is very sensitive to oxygen b. Because the protein is very sensitive to carbon dioxide c. There is no technique to isolate nitrogenase yet d. None of the above 4. Ammonia is incorporated into organic forms, these are: a. Glutamate b. Glutamine c. Carbamoyl phosphate d. All of the above 5. What general components are needed in order to make an amino acid a. Amino group donor, α-keto acid, aminotransferase b. A carbon molecule, ammonia, dehydrogenase c. Amino group donor, α-ketogluterate, aminotransferase d. None of the above 6. Which of the following can substitute for any essential amino acid in the diet of humans
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Unformatted text preview: a. Glutamate b. Corresponding alpha keto acid c. NH3 and phenylalanine d. NO 3-, SO 4 2-, and carbohydrate e. Serine and homocysteine 7. Which group of amino acids below is most related biosynthetically? a. Aspartate, serine, glutamate b. Alanine, glycine, serine c. Glycine, serine, cysteine d. Alanine, aspartate, asparagine e. Glycine, serine, and glutamate 8. Serine biosynthesis requires a. NADPH b. NADH c. Glutamate d. A and B e. A and C 9. Glutamine Synthetase is regulated by a. Acetylation b. Phosphorylation c. Adenylation d. Phosphorylation e. Methylation 10. In Nature, atmospheric N2 fixation is a ________process, while nitrification is a ________ process a. Reductive, Oxidative b. Oxidative, Reductive c. Catabolic, Oxidative d. Catabolic, Reductive e. None of these....
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homework lecture 13 - a. Glutamate b. Corresponding alpha...

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