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Question

Which of the following are covered by a single membrane?

A
Mitochondria
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B
Vacuole
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C
Lysosome
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D
Plastid
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Solution

The correct options are
B Lysosome
C Vacuole
Lysosomes and vacuoles are cell organelles that are enclosed by a single membrane.
Lysosomes contain hydrolytic enzymes, for digestion of non-functional cell organelles and pathogens. It is also called the 'suicide bag' of the cell.
Vacuoles: They are conspicuous in plant cell than animal cell. In plant cell they occupy about 70% - 80% of the cell volume and are centrally placed. The single membrane covering the vacuole of the plant cell is called tonoplast. It contains cell sap.
So, the correct answer is 'Vacuole and Lysosome'

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