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.
For example, some bacteria use sulfur instead of oxygen in their metabolism. Bacteria are incredibly varied, and incredibly abundant. To give some kind of organization to the multitude, bacteria are typically divided into four phyla: the cyanobacteria, spirochetes, gram-positive bacteria, and proteobacteria. Cyanobacteria are photosynthetic, like plants, which means that they use the sunÃs energy to make food for themselves.