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Introduction to Proteins (Pre-test)

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For each of the following questions select the best answer.

1. Amino acids are building blocks of proteins. Which of the following statements about amino acids is correct?
a. The backbone atoms of all amino acids are the same, while the side chains may either be hydrophobic, charged, polar etc.
b. The conformation of atoms in a specific amino acid (e.g. Tyrosine or Alanine) is always the same, no matter which protein it is found in
c. Commonly found amino acids in cells are D-amino acids
d. Configuration of atoms in D- and L-Alanine is the same
e. None of the above
2. Which of the following order of atoms correctly describes the sequential pattern of atoms in a protein backbone, starting at its N-terminus?
a. Amino N - carbonyl O - alpha C - carbonyl C
b. Amino N - alpha C - carbonyl C - Amino N
c. Amino N - carbonyl C - alpha C - Amino N
d. Amino N - carbonyl O - carbonyl C - alpha C
e. Alpha N - carbonyl O - amino C - carbonyl C
3. Which of the following bonds/interactions are found in the primary structure of proteins?
a. Salt bridges
b. Hydrophobic interactions
c. Peptide bonds
d. Hydrogen bonds
e. Metal coordination
4. Which of the following describes a protein function:
a. Proteolysis
b. Alcohol fermentation
c. DNA polymerization
d. Both a. and b. above
e. All of the above