Multiple choice

Which of the following mechanisms facilitate(s) absorption of antibodies?

  1. Simple diffusion

  2. Facilitated diffusion

  3. Active transport

  4. Endocytosis and exocytosis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Some molecules are simply too big to get across the membrane by diffusion or active transport. Absorption of intact proteins like antibiodies takes place in this manner.

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