Of the following, which amino acid is least likely to be found on the surface of a single-subunit protein? E M Which of the following is a correct grouping of amino acids based on their polarity? Phe, Glu, Val Ala, Cys, Lys Pro, Glu, Gly Gin, Asp, Trp Trp, Phe, Ala

In the tertiary structure of a protein, which pair of amino acid side chains would be most likely to participate in hydrophobic interactions? Asn/lys ser/cys gln/tyr val/thr phe/lêu

Which of the following protein should coat a vesicle that contains a receptor that can recognize the proteins having the following amino acid sequence Lysine (K), Aspartic Acid (D), Glutamic acid (E), Leucine (L)? Group of answer choices COP I COP II All of the other/above

Create an oligopeptide via dehydration synthesis using the following amino acids. O. H Tryptophan (TRP) C-C-N но сн, C-C-N. но Glycine (GLY) H H HN

> Is the R group (CH3) on the amino acid alanine seen below, polar or non-polar? > If there were several alanines close together in a peptide chain would that bit of the chain be exposed to or folded to "hide" from water? H H N-C H-C-H 0-H

Which of the following describes the most likely outcome of a mutation that causes a sin- gle amino acid to be removed from a protein subunit? A It will affect the primary, secondary, and tertiary structures of the protein. B с D It will affect the secondary and tertiary structures of the protein but not the primary structure. There will be no observable effect on the structure of the protein. It will change the primary structure of the protein without affecting other structures in the protein.

Which of the following regarding disulfide bonds is/are true? Disulfide bonds are the most common intrachain covalent linkage in proteins Disulfide bond formation is critical for correct protein folding into the native conformation Disulfide bonds impart a large degree of stability to the secondary structure of proteins The intracellular environment is too oxidizing to allow disulfide bond formation A and D