Why are lysosomes known as ‘suicide-bags’ of a cell ?
Q.1. Why are lysosomes known as ‘suicide-bags’ of a cell ?
Ans. Lysosomes are known as ‘suicide-bags’ because when cell gets damaged during the disturbance in cellular metabolism, lysosomes may burst and the digestive enzymes thus released and digest their own cell.
Q.2. Do you agree that “A cell is a building unit of an organism”. If yes, explain why ?
Ans. Cell →’tissue → organ → organ system → organism.
Q.3. Why does the skin of your finger shrink when you wash clothes for a long time ?
Ans. Soap solution is very concentrated – Hypertonic solution, so water moves out of your finger cells by osmosis.
Q.4. Why is endocytosis found in animals only ?
Ans. Cell wall is absent in animals.
Q.5. A person takes concentrated solution of salt, after sometime, he starts vomiting. What is the phenomenon responsible for such situation ? Explain.
Ans. Exosmosis in intestine causes dehydration.
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