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Question 1

Identify the correct name for the following peptide.

a) L-alanyl- L-phenylalanyl-glycine

b) glycyl- L-phenylalanyl-alanine

c) L-phenylalanyl- L-alanyl-glycine

d) L-alanyl-glycyl- L-phenylalanine

Question 2

Which of the following single letter codes represents the structure below?

a) DVYGSA

b) ASGYVD

c) EVFGSA

d) ASGFVE

Question 3

Which of the following statements is true about a peptide bond (RCONHR')?

a) It is non planar.

b) It is capable of forming a hydrogen bond.

c) The cis configuration is favoured over the trans configuration.

d) Single bond rotation is permitted between nitrogen and the carbonyl group.

Question 4

Which of the following statements is untrue about protein secondary structure?

a) The alpha helix, beta pleated sheet and beta turns are examples of protein secondary structure.

b) The ability of peptide bonds to form intramolecular hydrogen bonds is important to secondary structure.

c) The steric influence of amino acid residues is important to secondary structure.

d) The hydrophilic/hydrophobic character of amino acid residues is important to secondary structure.

Question 5

Identify which of the following terms refers to the arrangement of different protein subunits in a multiprotein complex.

a) primary structure

b) secondary structure

c) tertiary structure

d) quaternary structure

Question 6

Identify which of the following terms refers to the order in which amino acids are linked together in a protein.

a) primary structure

b) secondary structure

c) tertiary structure

d) quaternary structure

Question 7

Identify which of the following terms refers to the overall three dimensional shape of a protein.

a) primary structure

b) secondary structure

c) tertiary structure

d) quaternary structure

Question 8

Identify which of the following terms refers to 'regions of ordered structure within a protein'.

a) primary structure

b) secondary structure

c) tertiary structure

d) quaternary structure

Question 9

Identify the strongest form of intermolecular bonding that could be formed involving the residue of the amino acid serine.

a) ionic bond

b) hydrogen bond

c) van der Waals interactions

d) None of the above.

Question 10

Identify the strongest form of intermolecular bonding that could be formed involving the residue of the amino acid valine.

a) ionic bond

b) hydrogen bond

c) van der Waals interactions

d) None of the above.

Question 11

Identify the strongest form of intermolecular bonding that could be formed involving the residue of the amino acid glutamic acid.

a) ionic bond

b) hydrogen bond

c) van der Waals interactions

d) None of the above.

Question 12

Identify the strongest form of intermolecular bonding that could be formed involving the residue of the amino acid tyrosine.

a) ionic bond

b) hydrogen bond

c) van der Waals interactions

d) None of the above.

Question 13

Which of the following statements is incorrect regarding transport proteins?

a) They are present in cell membranes.

b) They serve to carry polar molecules across the hydrophobic cell membrane.

c) They are required to transport amino acids across cell membranes.

d) They are required to transport hydrophobic steroids across cell membranes.

Oxford University Press, Online Resource Centre, Chapter 02.

Chapter 02

Instructions

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Question 13