Unit Test — Unit test

Question 41 • 2026-2027 EDGE Human Anatomy and Physiology A

Vitamin A is a fat-soluble vitamin. How would it be transported into a cell for use?

Answer

Vitamin A will pass through the plasma membrane to go from outside the cell to inside.

Vitamin A will pass through proteins to go from outside the cell to inside.

Vitamin A will pass through carbohydrates to go from outside the cell to inside.

Vitamin A will pass through amino acids to go from outside the cell to inside.

Explanation

Vitamin A is fat-soluble, so it can dissolve in the lipid portion of the plasma membrane and pass directly through it. It does not need to pass through a membrane transport protein, carbohydrate, or amino acid. Choice A describes this movement; choice B gives the same description.

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