Question

In human body, the pressure exerted by the cells is ______ the atmospheric pressure
A.Equal to
B.More than
C.Slightly greater than
D.Greater than

Answer 1

Hint: We can say that atmospheric pressure is a measure of absolute pressure and is because of the weight of the air molecules above a certain height to sea level, rising with reducing altitude and reducing with increasing altitude.

Complete step by step answer:
Atmospheric air is only about 20 percent oxygen, but that oxygen is a major entity of the chemical reactions which keep the body alive, including the reactions which synthesize ATP. Brain cells are sensitive to lack of oxygen due to their requirement for a high-and-steady synthesis of ATP.
Atmospheric pressure is pressure exerted by the mixture of gases mainly nitrogen and oxygen in the atmosphere of Earth. We have to know that atmospheric pressure is continuously pressing down on our body. This pressure helps to maintain gases within our body like the gaseous nitrogen in body fluids, dissolved. Atmospheric pressure is helpful more than just keeping blood gases dissolved. Our capacity to breathe—that is, to absorb oxygen and liberate carbon dioxide—also depends upon an accurate atmospheric pressure.
The pressure exerted by our body cells is equal to the atmospheric pressure. Therefore, we do not get shrunk. Humans need high blood pressure enough to confirm that blood reaches all body tissues but low to avoid damage to blood vessels.

Therefore, the option (A) is correct.

Note:
We have to know that altitude sickness happens because the atmosphere at high altitudes exerts less pressure, decreasing the exchange of these gases, and leading to shortness of breath, headache, lethargy, and nausea. Mountain climbers carry oxygen to decrease the effects of low oxygen levels as well as low barometric pressure at higher altitudes.