Which one of the following structures or components is not always pr

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Which one of the following structures or components is not always present in living cells ?

Cell wall
Plasma membrane
Cytoplasm
Genetic material
This question was previously asked in
UPSC NDA-1 – 2023
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The correct answer is A) Cell wall.
While the plasma membrane, cytoplasm, and genetic material (DNA or RNA) are fundamental components found in *all* living cells (both prokaryotic and eukaryotic), the cell wall is not universally present.
A cell wall is a rigid outer layer found in plant cells, fungal cells, bacterial cells, and some protists. However, animal cells, which are also living cells, lack a cell wall. Therefore, the cell wall is not always present in living cells.

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