Metabolism

All living things can:

Take in energy

Store energy

Use stored energy

Laws of Thermodynamics

1^ST Law

2^ND Law

How do cells...

take in energy?

store energy?

use stored energy?

ATP = adenosine triphosphate

= form of energy used by cells to do work

= shuttles energy from sugar to site where it is used

ATP is formed by oxidation/reduction reactions

high-energy electrons are passed along an electron transport chain

they are stepped "downhill" in an energy sense