Quiz on Proteins

How many amino acids build into a protein?

• 25

• 20

• 15

• 30

Name the important functions of proteins?

Which part of the α-helix is involved in forming hydrogen bonds?

• Side chains

• N-H and C=O groups

• Carbon backbone

• R groups

T or F: A protein's primary structure is the sequence of its amino acid residues, from the C-terminus to the N-terminus

• True

• False

What type of interactions maintain the tertiary structure of proteins?

• Covalent bonds

• Ionic interactions

• Intramolecular interactions between amino acid side chains

• Hydrogen bonds only

Which of the following is NOT a type of interaction maintaining protein tertiary structure?

• Hydrogen bonds

• Salt bridges

• Disulfides

• Ionic bonds

What type of bond is primarily responsible for the secondary structure of proteins?

• Hydrogen bonds

• Salt bridges

• Disulfides

• Covalent bonds

T or F: The role of an amino acid in a protein is often dependent on its side chain

• True

• False

Define a peptide bond

Define a tertiary structure of a protein