10 QUESTION 10In amino acids, D- or L- system is applied to (or determined from)O All amino acids are symmetric, so you can not apply D/L systems.Chiral carbon furthèst away from the carboxylic acid groupBackbone chiral carbonO Chiral carbon in the side chain

Amino acids are organic molecules composed of carbon, hydrogen, oxygen, nitrogen, and sulfur (only…

Answered: QUESTION 10 In amino acids, D- or L-…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Question 5 An a-helix has the sequence: NH3-Ser-Glu-Gly-Asp-Trp-Gln-Leu-His-Val-Phe-Ala-Lys-Val-Glu- COO-. The carbonyl oxygen (in the peptide bond) of the W5 residue is hydrogen bonded to the amide nitrogen of H8 E2 O V9 O S1
QUESTION 1 The full name of this amino acid is The 3-letter abbreviation is Please also note the following: • The non-ionized structure is shown • Spelling matters • For the acidic amino acids use the full name, e.g. "so-and-so acid" • Case does not matter • Do not include L- or D- in the name НООС- СH - NH2 CH3
Question 19 Based on the hydropathic index plot below, where in the 3D structure of the protein would you expect to find amino acid number 185? 40 Hydrophobic 20 -20 -40 Hydrophilic 40 60 80 100 120 140 160 180 200 220 240 Residue number Alpha helix Beta sheet O Double helix O Quaternary contact O Interior of the protein O Surface of the protein Hydropathic index 20
Question 8 The major structural component of the exoskeletons of invertebrates is composed of N-acetyl-B-D-galactosamine joined by B-1,4-glycosidic bonds True False
Question 20 of 25 The figure below illustrates what reactions of amino acids? coo C=0 CH₂ CH₂ =0 00 + NHⒸ Decarboylation Cystine formation Esterification Transamination Peptide bond formation Transmethylation NAD(P)H+H Oxidative deamination Amide formation NAD(P) H₂ +H₂O COO CH₂ I میں CH₂ COOⒸ ATP ADP +P₁ H₂N-CH NHO CH₂ CH₂ NH₂ 20
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 5 The core protein of a proteoglycan is noncovalently attached to: O oligosaccharides. glycosaminoglycans O keratin sulfate. O hyaluronic acid backbone
Question 18 When we refer to the backbone of a polypeptide, we are referring to the attachment between: Incorrect Mark 0.00 out of Select one: 1.00 a. The amino and carboxyl groups only P Remove flag b. The peptide bond between two amino groups X C. The amino acids making the polypeptide d. The R groups of the amino acids e. The amino, carboxyl group and the a-carbon
QUESTION 21 You have the following coding sequence for a gene and need to generate billions of copies to study it. Which of the following are correce 5'ACCGACTATGCGGACTACGCGGGATCAAGGATCTGACT3' PCR can be used as a technique to generate copies of the sequence Polymerase chain reaction can be used as a technique to generate copies of the sequence ANTPS are needed in the reaction mix rNTPs are needed in the reaction mix DNA primers are used in the reaction mix RNA primers are used in the reaction mix The primers 5'ACCGA3' and 5'TGACT3' would allow amplification of the entire sequence above The heating step breaks phosphodiester bonds and allows each strand to serve as a template strand Human DNA polymerase would be used for the reaction mix but it is difficult to harvest from human cells Human DNA polymerase is denatured and rendered nonfunctional during the first step of the reaction cycle Click Save and Submit to save and submit. Click Save All Answers to save all answers. MecBook Air
Question 11 Four these are related. Select the exception. amino group O carboxyl group Rgroup (side chain O hydrogen O nitrogenous base

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QUESTION 10 In amino acids, D- or L- system is applied to (or determined from) O All amino acids are symmetric, so you can not apply D/L systems. Chiral carbon furthèst away from the carboxylic acid group Backbone chiral carbon O Chiral carbon in the side chain