Multiple choice

Which of the following organelles of a bacterial cell acts as partial permeability barrier for large substrates?

  1. Plasma membrane

  2. Cell wall

  3. S-layer

  4. Glycocalyx
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

S-layer acts as a partial permeability barrier for large substrates. It keeps extracellular proteins near the cell membrane by preventing their diffusion away from the cell.

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