how do they get enough oxygen through its surface cell membrane by diffusion?
2006-09-10 02:20:51 · 5 answers · asked by Carl 2 in Science & Mathematics ➔ Biology
being so small they have a very high surface area to volume ratio. also many have various changes to their shape to aid gas exchange, for example, long and thin instead of round
2006-09-10 02:34:08 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The process of breaking down food to obtain energy is called respiration. Most bacteria need oxygen for this process. Some bacteria do not need oxygen for this process. Still other bacteria are killed if they are exposed to oxygen.
2006-09-10 09:36:15 · answer #2 · answered by misery 7 · 0⤊ 0⤋
An awful lot of them don't need to, they are anaerobic, and the others must have figured it out somehow.
2006-09-10 09:26:19 · answer #3 · answered by haggesitze 7 · 0⤊ 0⤋
if they are bacteria they mooch off other organisims, like us for example.
2006-09-10 09:23:35 · answer #4 · answered by sur2124 4 · 0⤊ 0⤋
osmosis or something like that
2006-09-10 09:23:05 · answer #5 · answered by jon k 4 · 0⤊ 0⤋