Protein Structure

What functional group is not found in the monomer of proteins?

• phosphate

• carboxyl

• amino

There are 20 different amino acids, what differs between them?

• the presence/absence of an amino group

• the presence/absence of a carboxyl group

• the R side chain

• all of the above

An amino acid that has only carbon & hydrogen in its R side chain would be classified as?

• nonpolar

• polar

• charged

What is the primary structure of a protein?

• the length of the amino acid chain

• the sequence of amino acids in the chain

• amino acids connected via peptide bonds

• all of the above

What stabilizes secondary structure of a protein?

• peptide bonds

• R group interactions

• Hydrogen bonding along the backbone

Which of the following is NOT a type of secondary structure found in proteins?

• antiparallel double helix

• alpha helix

• beta pleated sheet

What interactions can cause a protein to fold into its tertiary structure?

• opposite charge attractions between side chains

• nonpolar interactions between side chains

• hydrogen bonding between side chains

• all of the above

A protein that is comprised of two or more subunits has _________ structure as its highest level.