Question

1:
C
HE FUNDAMENTAL UNIT OF LIFE : CELL
0.4. Why is endocytosis found in animals only?
An Endocytosis is swallowing up of food and other substances (bacteria, viruses) from external medium by the
plasma membrane. This is possible only when plasma membrane is in direct contact
with external medium
It occurs only in animal cells. In plant cells, a cell wall is present over the plasma membrane. Therefore, their
plasma membrane cannot perform endocytosis.
7.5. A person takes concentrated solution of salt. After some time he starts vomiting. What is the phenomenon
responsible for such a situation ? Explain.
salt solution is a hypertonic solution so cause​

Answer 1

Answer:

Concentration salt solution is a hypertonic solution (water concentration lower as compared to the cell) therefore it causes exosmosis. The outward movement of water from the cell results in irritation and excessive dehydration.