All living things can:

            Take in energy

            Store energy

            Use stored energy


Laws of Thermodynamics

            1ST Law

            2ND 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