Which of the following is FALSE about DIFFUSION? Select more than one answer. a.

Question

Which of the following is FALSE about DIFFUSION? Select more than one answer.

a. Simple diffusion is used by all hydrophobic molecules. For hydrophilic molecules, simple diffusion is only restricted to smaller hydrophilic molecules such as water and urea.

b. In both simple and facilitated diffusion, water will passively crosses the cell membrane by aquaporin channel from a lower solute concentration to a high solute concentration

c. Hydrophobic molecules, such as ethanol, glycerol, and urea, only cross the cell membrane by simple diffusion, which does not require channel or carrier protein transporters and ATP.

d. In facilitated diffusion, organic molecules will only cross by channel proteins while inorganic (ionic) molecules will only cross by carrier protein transporters.

e. In facilitated diffusion, whether the molecules is organic or inorganic hydrophilic molecules, the molecule will always move actively from its higher concentration to lower concentration.

Explanation / Answer

answer-

a. Simple diffusion is used by all hydrophobic molecules. For hydrophilic molecules, simple diffusion is only restricted to smaller hydrophilic molecules such as water and urea.

Explanation- simple diffusion is only restricted to Larger hydrophilic molecules.

d. In facilitated diffusion, organic molecules will only cross by channel proteins while inorganic (ionic) molecules will only cross by carrier protein transporters.

Explanation- Channel proteins transport only water or certain ions.

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