Very thin and fragile red blood cells pass through in single file
exchange of oxygen and carbon dioxide happens here
The three phrases above describe the
in our circulatory system.
A)
veins
B)
arteries
capillaries
D)
blood plasma

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.