Actually yes. You can find organisms, like bacteria, living in deep oceans, which do not have access to sunlight. There are cases in which they use thermal resources in order to produce energy. They are called <span>chemoautotrophs. You can find them around deep ocean "smokers".</span><span />
Glucose is required for both aerobic and anaerobic respiration.
I think that would depend because there are 3c different forms of Trypanosoma brucei but for the most all three range between the size of 12-27<span>µm. </span>
