The Solutions in the Two Arms of This U-Tube Are

question 9

Multiple Choice

The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and glucose but not to sucrose. Side A is half-filled with a solution of 2 M sucrose and 1 M glucose. Side B is half-filled with 1 M sucrose and 2 M glucose. Initially, the liquid levels on both sides are equal.

-After the system reaches equilibrium, what changes are observed?

• A) The molarity of sucrose and glucose are equal on both sides.
• B) The molarity of glucose is higher in side A than in side B.
• C) The water level is higher in side A than in side B.
• D) The water level is unchanged.
• E) The water level is higher in side B than in side A.

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Definitions:

Antigens

Substances that the immune system recognizes as foreign or dangerous, triggering an immune response.

Phagocytes

White blood cells that engulf and digest cellular debris, foreign substances, microbes, and cancer cells in a process known as phagocytosis.

Antibodies

Proteins in the blood that identify and neutralize foreign substances like bacteria and viruses.

Kiecolt-Glaser

Refers to psychologist Janice Kiecolt-Glaser, known for her research on stress and its effects on the human immune system.