CH2OH ÇH2OH Но O. H H. ÓH H. ÓH H.
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- Question 2. An enzyme was found to convert Acetyl-coA to an acetyl-cysteine intermediate of the enzyme. The structure of cOA is: H H НО СН; HS — СH2— СH2 — N—C—CH,— CH2—N- С—С—С—CH;—0—Р- 0–CH2 Adenine н CH H H H Phosphopantetheine group of coenzyme A 2-O3PO ОН Draw a plausible chemical mechanism. Where is the acetyl-group in acetyl-coA? What is the reactive group of the protein? The reaction is enhanced at higher pH. How is this consistent with your mechanism? Is covalent catalysis involved?QUESTION 14 Identify the pictured nucleotide NH₂ N O 11 HO-P-O OH HO OH O Uracil monophosphate O Deoxythymidine monophosphate O Cytidine monophosphate O Deoxycytidine monophosphateQuestion three parts g though h g. Which of the following disaccharides below is NOT reducing sugar? D. HO. O HO он но. OH OH OH OH HO HO но HO. OH OH OH OH OH HO HO. HO. OH но OH он он HO O h. True/False - The only chemical difference between starch and cellulose is the stereochemistry of the glycosidic linkage. More precisely, the stereochemistry at the C-1 anomeric carbon linkage.
- QUESTION 27 Consider figure below with three sugar units A, B, and C CH2OH A но OH но сн2 HOCH2 OH H L0JH но CH-OH но H В (a) Which monosaccharide is furanose and which is pyranose? A (b) What is the linkage between the monosaccharide units (answer example: 1 to 2) Between sugar A and B Between sugar B and C (C) Is this a reducing sugar? yes or noQuestion 4. Sucrose-6-P Glucose-6-P Cytoplasm Cell wall Cell membrane hasC Glucose-1-PUDP-Glucose hasB HA Fructose-6-P➡ Glucosamine-6-P hasA i. UDP UDP-GICUA UDP-GlcNAc Glucosamine-1-PN-Acetyl Glucosamine-1-P Group A Streptococcus (GAS) is a human-specific bacterial pathogen responsible for serious morbidity and mortality worldwide. The hyaluronic acid (HA) capsule of GAS is a major virulence factor, contributing to bloodstream survival through resistance to neutrophil and antimicrobial peptide killing and to in vivo pathogenicity. Genomic studies of GAS have identified genes for hyaluronate synthase (encoded by basA), a membrane-associated enzyme that forms the linear HA polymer by the alternate addition of N-acetylglucosamine and glucuronic acid residues from their respective UDP-sugar precursors. UDP-glucose 6-dehydrogenase (encoded by hasB) forms UDP-glucuronic acid from UDP-glucose in the presence of NAD, while UDP- glucose pyrophosphorylase (glucose-1-phosphate…QUESTION 8 Imagine that a proline is present at position 4 in an alpha helical structure, the number of hydrogen bonds that proline can form with other amino acids is/are One Four Two None
- Question 13 Which of the following is the correct structure of the tripeptide Gly-Phe-Ala? a. H-N. Ph H. N. b. HN OH с. H,N. Ph d. OH но Ph NH, O a O b O d * Previous ASSIFICATION OF AMINO ACOS perbes, tis ed on the in chemican VE CLASS CLASSIFI tende nd the LG their co0 useful POLARITY of their R polar, aliphatic R group R group R ter at biological pH, near pH 7.0). ged R group d(basic) Rgroup cidic) Rgroup saov OM HHHINQUESTION 9 Indicate the false statement regarding amino acids. OA Every amino acid contains a carboxyl group. OB The side chain or R group differs for each amino acid. O C. Amino acids are joined together by peptide bonds. O D. The end of the polypeptide termed the N terminus contains a free amino group. O E. All the choices are correct.Question 15 Three of these are related to a nucleotide. Select the exceptions. R group pentose O phospahte group O nucleoside n amino group
- i have a question from Lehninger, bichemistry, 13-16 and i know that there is already a copy paste answer from the book for the question on bartleby, howerver I do not understand it and need explained further, as the answere in the book does not help me at all. In the glycolytic pathway, a six-carbon sugar (fructose 1,6-bisphosphate) is cleaved to form two three-carbon sugars, which undergo further metabolism. In this pathway, an isomerization of glucose 6-phosphate to fructose 6-phosphate (as shown in the diagram) occurs two steps before the cleavage reaction. The intervening step is phosphorylation of fructose 6-phosphat to fructose 1,6-bisphosphate What does the isomerization step accomplicsh from a chemical perspective? Consider what might happen if the C-C bond cleavage were to proceed without the preceding isomerization.Question 3 он он но- OH он о но. OH LOH но- но- OH OH Он This is a reducing tetrasaccharide and is made up of 3 different monosaccharides O True FalseQuestion 14 ZORANG PENYATA G O a polar head and tail TANAMAN A phospholipid molecule is best described as: O a polar head and nonpolar tail a nonpolar head and tail ****** an adenine with three phosphates