1 A unit-quantity of electricity used as a measure of the amount of electrical charge that may be obtained from a storage battery before it requires recharging. 2  Ampere-Hour Capacity -- The number of ampere-hours which can be delivered by a storage battery on a single discharge.
A: Bacteria obtain energy by either ingesting other organisms and organic compounds or by producing their own food. The bacteria that produce their own food are called autotrophs. Bacteria that must consume other organic molecules for energy are called heterotrophs.
Transcript of Chemical Energy and ATP. Organisms that get their food by eating other organisms are known as heterotrophs. Some heterotrophs get their food by eating plants, such as grass or lettuce. Other heterotrophs get their food by eating animals.