Which Molecules Most Easily Diffuse Across a Cell Membrane

question 29

Multiple Choice

Which molecules most easily diffuse across a cell membrane?

• A) ionic
• B) large, polar
• C) large, hydrophilic
• D) small, hydrophobic
• E) large, hydrophobic

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Definitions:

Pulmonary Valves

Heart valves located at the opening of the pulmonary artery that prevent backflow of blood into the right ventricle.

Aortic Valves

The valve in the heart that controls blood flow from the left ventricle into the aorta.

Hemorrhagic Shock

A condition of reduced tissue perfusion, inadequate oxygen supply to the cells, often a result of severe blood loss.

Cardiac Output

The volume of blood the heart pumps through the circulatory system in one minute, typically measured in liters per minute.