Dietary non dietary not major micro

Carbohydrates

Major dietary components (Macronutrient)
Polymeric Monomers: sugars or monosaccharid es Oligomers Polymers: Glycogen
Major fuel in metabolism (Primary fuel!) Stored as glycogen in the liver and muscles Digested as monomers

Lipids

Major dietary components (Macronutrient)
NOT polymeric
Secondary fuel source (Stored in adipose tissue) Important structural role in membrane bilayers Saturated vs. unsaturated

Proteins

Major dietary components (Macronutrient)
Polymeric Monomers: AA Oligomers: Polymers: Protein
Various functions (pump, channel, enzymes, receptors, etc.) No major storage form. Digested as monomers

Nucleic Acids

NOT major dietary component
Polymeric Monomers: nucleotides Polymers: DNA & RNA
NOT used as fuel Carries genetic/heredita ry information

Steroids

NOT major dietary component
Not polymeric
Steroid nucleus ( 4-fused rings) Structural role in cell membranes Used to make steroid hormones and bile salts Very hydrophobic

Vitamins

Micronutrient Required small amounts
Not polymeric Diverse structures
In active form, essential roles as coenzymes in a variety of metabolic reactions. Water-soluble (B and C) Lipid-soluble (KADE)

Inorganic Materials

Micronutrients
Not polymeric Chemically, the simplest class (ions)
Electrostatic potential of membranes.