In animal cells, the methyl side chains on the tetrapyrols of Protoporphyrin IX are derived from?
A. C-2 of Glycine
B. C-1 of delta-aminolevulinic acid
C. C-3 of Succinyl CoA
D. C-4 of Succinyl CoA
E. C-1 of Glycine
The formation of heme occurs from protoporphyrin IX which islater incorporated into hemoglobin and cytochromes.
The precursors are glycine and succinylcholine coA. Decarboxylation of glycine followed by condensation with Succinyl-CoA is catalyzed by aminolevulinic acid synthase. The methyl group comes from the C2 of the glycine.
the reaction is given in the below image.
In animal cells, the methyl side chains on the tetrapyrols of Protoporphyrin IX are derived from? A. C-2 of Glycine B. C-1 of delta-aminolevulinic acid C. C-3 of Succinyl CoA D. C-4 of Succinyl CoA E....
1.Under anaerobic conditions pyruvate is converted to acetly CoA True or false? 2.Expect for glycine, all of the amino acids in a protein have the D configuration. True or false? 3.The side chain of the amino acid lysine is -CH2-CH2-CH2-CH2-NH2. TO which category does this amino acid belong? 4. which statment below describes the primary structure of a protien? - peptide bonds join amino acids in a polypeptide chain? - two polypeptide chains are held together by hydrogen bonds and...
1. An enzyme that phosphorylates nucleotides is c. phosphofructokinase b. phosphorylase d. succinyl-CoA synthetase a. malic enzyme 2. An example of a nucleotide-regulated allosteric enzyme is a. lactonase c. pyruvate kinase b. alcohol dehydrogenase d. enolase 3. Adenylate kinase makes ATP and AMP b. ATP only a. c. ADP and AMP d. AMP only
27 biochem b.3 c. 3.3 d. 10 e. cannot be determined 27. Which of the following enzymes is correctly paired with an inhibitor? a. hexokinase: ATP b. phosphofructokinase-1: AMP C. pyruvate kinase: ATP . d. phosphofructokinase-2: citrate e. glyceraldehyde-3-phosphate dehydrogenase: 1,3-bisphosphoglycerate 28. The correct sequence of steps between succinyl-CoA and ATP in mammals to "preserve the energy of the thioester bond are: A. succinyl-phosphate. B. phosphohistidine. C. GTP. D. Acetyl-CoA. 2 A, B, C b. B, C, A
Part 1What is the major product of the following reaction? a. 2-ethyl-1-pentene b.(E)-4-methyl-3-hexene c.(E)-3-methyl-2-hexene d. (Z)-3-methyl-2-hexene Part 2 What alkyl chloride gives the following as the only product upon treatment with a strong base? a. b. c. d. Part 3 Give the major product for the following E1 reaction. a. b. c. d. e. CH3 CH3CO Br CH3
26) Name the following compound. CH3 H2C=CH-CH2CHCH: A) 1,1-dimethyl-3-butane B) 4-methyl-1-pentene C) hexene D) 2-methyl-4-pentene E) 2-methylpentene 27) Name the following compound. CI A) 2,3,5-trichlorobenzene B) trichlorostyrene C) 1,3,4-trichlorobenzene D) 1,3,4-trichlorohexene E) 1,2,4-trichlorobenzene 28) Identify the formula for an alkene. A) CnH2n+4 B) CnH2n+2 C) CnH2n D) CnH2n-4 E) CnH2n-2 29) Name the following compound. A) 1,4-bromocyclohexene B) 1,4-dibromobenzene C) 3,6-dibromobenzene D) 2,5-dibromobenzene E) 2,5-dibromocyclohexene 30) Name the following compound. CECH CH,CH,CHCH A) 2-ethynebutane B) 3-methyl-1-pentyne C) 3-methyl-4-pentyne D) 3-ethyl-1-butyne...
Can someone please check my answers and aid in #12? 1. The amide nitrogen of glutamine: A. represents a nontoxic transport form of ammonia. B. is a major source of ammonia for urinary excretion. C. is used in the synthesis of asparagine, purines, and pynimidines. D. can be recovered as ammonia by the action of glutaminase. E. all of the above are correct. 2- Which of the following statements about glutamate is NOT true: a It can be synthesized in...
Lumili alle for the following compound? - (CH)CHCH.COCH,CH, a. 2-methyl-4-hexanone c. 2-methyl-3-hexanone b. 5-methyl-3-hexanone d. ethyl isopropyl ketonel. 25-Identify the directing effect of the ring substituent in the following reaction: BO, HBO. (a) o.p., activating (b) m-, deactivating (c) o.p., deactivating (d) None of these 26--Ketones are easily reduced to CH3-C-CH3 a-Secondary alcohol b- Primary alcohol c- to acetaldehyde d- to carboxylic acid 27-. What is the structure of the azo group? a-N- b-N-N- C-NEN- d-NEN- 28-What class of organic...
The major product of the acid-catalyzed hydration of (E)-3-methyl-3-hexene is a. (3R,4S)-4-methyl-3-hexanol exclusively b. (S)-3-methyl-3-hexanol exclusively c. 4-methyl-3-hexanol racemic mixture of two enantiomers d. (R)-3-methyl-3-hexanol exclusively e. (3S,4R)-4-methyl-3-hexanol exclusively f. 3-methyl-3-hexanol
110. Tay Sachs disease is the result of a genetic defect in the metabolism of: A. Sterols B. Triacylglycerols C. Vitamin D D. Gangliosides E. Phosphatidyl ethanolamine 111. The carbon atoms from a fatty acid with an odd number of carbons with enter the citric acid cycle as acetylCoA and: A. Butyrate B. Citrate C. Malate D. Succinyl-CoA 112. Which is the correct order of function of the following enzymes in one cycle of B oxidation? 1. B-hydroxyacyl-CoA dehydrogenase 2....