Refer to the Figure

question 89

Multiple Choice

Refer to the figure.
The two chambers in the figure are separated by a semipermeable membrane. What will happen to the fluid levels if salt is added to the left chamber?

• A) The solute concentration of the left chamber will increase, but the liquid levels will not change.
• B) The difference in solute concentration will push salt and water molecules through the membrane until the concentrations are equivalent, which will overcome gravity and result in a higher level of fluid in the right chamber.
• C) If enough salt is added, the difference in solute concentration will push salt molecules through the membrane until the osmotic pressure is less extreme, but the liquid levels will not change.
• D) Water molecules from the right chamber will pass through the membrane until the ratio of water to salt is the same in both chambers, resulting in a higher level of fluid in the left chamber, despite gravity.

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Definitions:

Brush Border

Epithelial surface consisting of microvilli.

Segmental Contractions

Segmental contractions refer to the rhythmic contraction and relaxation of segments of the intestines, aiding in the mixing and absorption of nutrients.

Small Intestine

A long, coiled section of the intestinal tract where most digestion and absorption of nutrients occurs.

Circular Folds

Series of folds on the inner surface of the intestine that increase its surface area for absorption.