+1 vote
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Which of the following forms the barrier between the cytoplasm and the external environment?

(a) Vacuoles

(b) Plasma membrane

(c) Lysozyme

(d) Golgi

I have been asked this question in a national level competition.

This intriguing question comes from Brewing Yeast in division Brewing Yeast of Fermentation Technology

1 Answer

+2 votes
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Best answer
Correct answer is (b) Plasma membrane

The explanation: Plasma membrane forms the barrier between the cytoplasm and the external environment. It acts as a semi-permeable membrane that allows only specific solutes to pass into the cytoplasm of the cell.

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