The following table describes five molecules that belong to the same class.
Molecule Function
Hemoglobin transports oxygen in the blood
Amylase an enzyme that breaks down starch
Immunoglobulin an antibody produced in response to an invading particle
Collagen the main structural component of connective tissues
Aquaporin transports water in and out of the cell
Which class of biomolecule do the molecules in the table belong to?
