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Q14
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- Which of the following amino acids is unique in that it can bind both non-specifically to the DNA backbone as well as to specific DNA bases? a) Lysine b) Asparagine c) Arginine d) Phenylalanine e) LeucineWhich amino acid has a guanidino group? Histidine Arginine Tryptophan Aspartic acid Which amino acid has a polar non-titratable R group? Arginine Histidine Proline SerineWhich amino acid from the following list best fits the alpha helix? lysine alanine glycine serine
- Which of the following amino acid is acetylated when DNA is unwound from histones? a. Asparagine b. Lysine c. Arginine d. GlycineWhich of the following does cytosine pair with?a. guanineb. thyminec. adenined. a pyrimidineWhich of the following is not a nucleotide? a. adenosine triphosphate b. adenosine diphosphate c. adenine d. cytosine e. arabinose
- Which of the following enzymes creates a covalent bond that links amino acids in a polypeptide? Protein disulfide isomerase Hsp70 Peptidyl-prolyl isomerase CalreticulinOn which of the following amino acids is an N-linked glycan added to? A.Asparatic acids B.Asparagine C.Leucine D.HistidineWhich amino acid sidechain can readily donate or accept a proton at near physiological pH? a. Proline b. Lysine c.Tyrosine d.Histidine
- Which amino acid is most likely to have a net positive charge at a pH of 7.4? A) Histidine B) Cysteine C) Arginine D) SerineWhich of the amino acids does NOT have an aliphatic side chain? a. Lysine b. Alanine c. Leucine d. Isoleucine e. ValineWhich of the following amino acids contains a carboxamide side chain? A.glutamine B.alanine C.isoleucine D.asparagine E.methionine
