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.