Lactase Function: Enzyme that speeds up the breakdown of lactose (the main sugar found in milk) into glucose and galactose Polymer? Yes Subunits (monomers): amino acids

Hemoglobin Function: Found in blood cells of almost all vertebrate animals, it is used to carry oxygen for distribution to body’s cells Polymer? Yes Subunits (monomers): amino acids

Antibody Function: Identify foreign objects (such as bacteria and viruses) and tag them for removal by the immune system Polymer? Yes Subunits (monomers): amino acids

Actin Function: Involved in many cellular functions including movement, transport and division Polymer? Yes Subunits (monomers): amino acids

Lactose Function: Molecule in milk that makes it taste sweet. Provides short term energy for mammalian infants. Polymer? Yes Subunits (monomers): monosaccharides glucose and galactose

Starch Function: Main energy storage molecule in plants Polymer? Yes Subunits (monomers): monosaccharide glucose

Glycogen Function: Main energy storage molecule in animals Polymer? Yes Subunits (monomers): monosaccharide glucose

Chitin Function: Polysaccharide used for structural purposes in the exoskeletons or shells of many invertebrate animals. Polymer? Yes Subunits (monomers): monosaccharide glucose

Cellulose Function: Polysaccharide used for structural purposes in plants Polymer? Yes Subunits (monomers): monosaccharide glucose

Wax Function: Waterproof covering found on leaves, feathers, and insect cuticles Polymer? Not a true polymer. Composed of a long-chain alcohol and a fatty acid

Oils & Fats Function: Long term energy storage. Also play a vital role in maintaining healthy skin & hair, protecting body organs and maintaining body temperature Polymer? Not a true polymer. Composed of a glycerol and fatty acids

Phospholipids Function: Major component in cell membranes that helps maintain internal environment that is different than the environment outside the cell. Polymer? Not a true polymer. Composed of a phosphate group and 2 fatty acids

DNA Function: Polymer? Yes Subunits (monomers): Carries genetic (hereditary) information for traits by providing code for protein synthesis Polymer? Yes Subunits (monomers): 4 nucleotides (A, T, C, G)

mRNA Function: Carries the code for a trait from the nucleus to the ribosomes (site of protein synthesis) Polymer? Yes Subunits (monomers): 4 nucleotides (A, C, G, U)

tRNA Function: Delivers amino acids to a ribosome during protein synthesis Polymer? Yes Subunits (monomers): 4 nucleotides (A, C, G, U)

rRNA Function: Structural component of ribosomes. Helps formation of bonds during protein synthesis Polymer? Yes Subunits (monomers): 4 nucleotides (A, C, G, U)