Which of the following statements about osmosis is correct?

A. If a cell is placed in an isotonic solution, more water will enter the cell than leaves the cell.

B. Osmotic movement of water into a cell would likely occur if the cell accumulates water from its environment.

C. If a solution outside the cell is hypertonic compared to the cytoplasm, water will move into the cell by osmosis.

D. The presence of aquaporins (proteins that form water channels in the membrane) should speed up the process of osmosis.

E. Osmosis is the diffusion of water from a region of lower water concentration to a region of higher water concentration.

Question

Francisco Carrillo

Biology

28 December, 18:57

Which of the following statements about osmosis is correct?

A. If a cell is placed in an isotonic solution, more water will enter the cell than leaves the cell.

B. Osmotic movement of water into a cell would likely occur if the cell accumulates water from its environment.

C. If a solution outside the cell is hypertonic compared to the cytoplasm, water will move into the cell by osmosis.

D. The presence of aquaporins (proteins that form water channels in the membrane) should speed up the process of osmosis.

E. Osmosis is the diffusion of water from a region of lower water concentration to a region of higher water concentration.

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Answers (1)

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Leticia Coleman · Answer 1

D. The presence of aquaporins (proteins that form water channels in the membrane) should speed up the process of osmosis.

Explanation:

Water moves in the cells through osmosis which means water moves from its higher concentration to lower concentration. In many animals and plants, water channels are also present which is called aquaporins which allow the water to move through it in and out of cell more quickly.

The rate of diffusion by channel proteins is higher than simple diffusion therefore the aquaporins speed up the process of osmosis. No ATP is required to transport the water through aquaporin channel proteins.