Question

Which of the following is not absorbed by simple diffusion?

• A. Glucose
• B. Amino acids
• C. Sodium ions
• D. Chloride ions

Answer 1

Answer:

C. Sodium ions

Sodium ions are not absorbed by simple diffusion. Glucose, amino acids and some electrolytes like chloride ions are generally absorbed by simple diffusion. The rate or passage of these ions depends upon the concentration gradients.