3.2 food Introduction to 3.2.1

Which type of food provides the most energy?

What are the four macromolecules? Proteins Carbohydrates Lipids Nucleic Acids

Monomers & Polymers In the molecular world, the small subunits that ultimately link together to form larger molecules are called monomers, which literally means "single unit" (mono = one). When a bunch of monomers join together into a much larger molecule, they form a polymer, meaning "many units" (poly = many).

What are the Monomers? Proteins = amino acids

Monomer Nucleic Acid = Nucleotide

Monomer Carbohydrate = monosaccharide

Monomer Lipids – no monomer

Foods Name two for each macromolecule.

Hydrolysis Hydrolysis literally means reaction with water. It is a chemical process in which a molecule is cleaved into two parts by the addition of a molecule of water. Needed to breakdown macromolecules during digestion http://nhscience.lonestar.edu/biol/dehydrat/de hydrat.html

Dehydration It is a type of condensation reaction in which monomers join together into polymers while losing water molecules. How amino acids link together to make proteins http://nhscience.lonestar.edu/biol/dehydrat/dehydrat .html