Which of the following is not an accurate justification for studying microbes?
a. they cause disease
b. they have subcellular organelles
c. they have relatively small and simple genomes
d. they’re an important part of the human body

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.