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Question

The barrier which separates the protoplasm from the external environment is known as


A

Plasma membrane

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B

Chlorophyll

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C

Ribosomes

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D

Nucleus

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Solution

The correct option is A

Plasma membrane


The plasma membrane or cell membrane is a thin flexible layer around the cells of all living things. Its basic job is to separate the inside of cells from the outside. In all cells, the cell membrane separates the protoplasm inside the cell from its surroundings.


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