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Question
Which of the following are covered by a single membrane?
Options
Mitochondria
Vacuole
Lysosome
Plastid
Solution
Lysosome
Explanation -
Lysosomes are simple, tiny spherical sac-like structures evenly distributed in the cytoplasm each lysosome is surrounded by a double membrane and contains powerful enzymes capable of digesting or breaking down all organic material. These enzymes are made by the rough endoplasmic reticulum. They perform the following functions in our body
- They help in breaking down (digesting) large molecules of the cell.
- They help in defense against bacteria and viruses.
- During starvation, lysosomes act on their own cellular organelles and digest them. This results in cell death. The lysosomes are also called suicide bags or demolition squads of the cell.
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Analogy
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Name the following:
The folds/finger-like projections from the inner wall of the mitochondria.
