- refers to all the chemical reactions that occur in the body

- anabolic and catabolic rxn are coupled

- energy released fr. catabolic rxns is generally used to drive anabolic rxns for maintenance

- rxns that break down complex mol into simpler ones

- exergonic rxns bc they release energy

- rxns that combine simple mol. to form complex structures

- endergonic rxns bc they require energy

- nutrients contain chemical energy

- ATP is the energy currency of the cell

- breakdown of glucose w/in cells, w/the accompanying synthesis of ATP

- a metabolic pathway that converts this chemical energy in food into a form that can be used in the body - namely ATP

- regenerates ATP

- adenosine triphosphate

- energy currency

- ADP + P + energy <=> ATP

- metabolism

- cell division

- growth

- movement

- action potentials

Oxidation: removal of e-, resulting in a decrease in energy of the mol.

Reduction: gain in e-, resulting in an increase in energy of the mol.

Whenever one substance is oxidized, another substance is reduced

1. glycolysis

2. formation of acetyl coenzyme A

3. Krebs cycle

4. Electron transport chain