Shoaib Q- why does the skin of your finger shrink when you wash cloths for a long time? Answer:- soap solution is of higher concentration (hypertonic), due to this water moves out of finger due to the phenomenon of exosmosis and it leads to shrinkage of fingers.
Q- why is endocytosis found in animals only? Answer:- endocytosis is possible only when cell membrane is directly in contact with food and other substances to engulf them. In plants, external to plasma membrane, cell wall is present. So plant cells cannot go for endocytosis. It occurs only in animal cell, due to absence of … Read more
Q- A person takes concentrated solution of salt. After sometime he starts vomiting. What is the phenomenon responsible for such a situation? Explain. Answer:- concentrated salt solution causes dehydration in intestine due to exosmosis. Reverse movement of food takes place and leads to vomiting.
Q- Name any cell organelle which is non-membranous. Answer- The non-membranous cell organelle of a cell is Ribosomes. Ribosomes work as protein synthesizer or ribosomes. Easy way to draw labelled diagram of Ribosomes: