From what sources are people most likely exposed to BPA?What external factors, or conditions, affect the release of BPA from those sources?How can people reduce their exposure to BPA?Should BPA be kept out of products that people frequently use? Why or why not?

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.

5. what might happen if you were to remove all light from the setup after the discs have all become buoyant? describe what you would see. explain why this would occur with relation to cellular processes like respiration. [referring to an ap biology lab in which spinach discs are placed in a sodium bicarbonate solution and exposed to light.]

By going through the process of cellular respiration the cell can gain molecules of atp.