Why do cells use fat and starch for long-term energy storage instead of atp molecules?
a: atp is used for long-term storage, while fat and starch are used for immediate energy.
b: atp is used for short-term energy and to build molecules of starch and fat.
c: fat and starch are unstable and can be stored short-term, while atp molecules are stable and stored long-term.
d: fat and starch are stable if used as energy immediately, while atp is used as long-term storage.