Which of the following is NOT a type of protein function?

• Transport proteins

• Energy proteins

• Contractile Proteins

• Receptor proteins

What type of bond links individual amino acids together to form a polypeptide chain?

• Hydrogen bond

• Glycosidic bond

• Peptide bond

• Phosphodiester bond

Which of the following amino acids has a positively charged side chain at a neutral pH?

• Arginine

• Glutamate

• Glycine

• Tyrosine

The specific sequence of amino acids in a polypeptide chain is known as which level of protein structure?

• Secondary structure

• Tertiary structure

• Primary structure

• Quaternary structure

Which of the following amino acids contains sulfur in its side chain?

• Tyrosine

• Methionine

• Threonine

• Proline

Which type of bond is most important in maintaining the α-helix and β-sheet structures of proteins?

• Disulfide bonds

• Ionic bonds

• Phosphodiester bonds

• Hydrogen bonds