Which of the Following Crosses Lipid Bilayers the Fastest

question 29

Multiple Choice

Which of the following crosses lipid bilayers the fastest?

• A)a sodium ion
• B)a small,polar molecule like water
• C)a large,polar molecule like glucose
• D)a small,nonpolar molecule like oxygen (O₂)

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Definitions:

Superior Vena Cava

A large vein carrying deoxygenated blood from the upper half of the body to the heart's right atrium.

Systemic Capillaries

Microscopic blood vessels where exchange of gases, nutrients, and waste products occurs between the blood and tissues throughout the body.

Ventilations

The movement of air between the environment and the lungs via inhalation and exhalation, used in respiratory processes.

Respiratory Center

Group of nerve cells in the medulla oblongata that sends out nerve impulses on a rhythmic basis, resulting in involuntary inspiration on an ongoing basis.