Q18 of 78 Page 136

How does an Amoeba obtain its food?

i) Amoeba is a unicellular organism. It obtains its food by a process known as endocytosis.

ii) In endocytosis, the plasma membrane extends outwards to engulf the particles on the outside.

iii) In amoeba, the plasma membrane also engulfs the food particles on the outside and takes it inside the cell via endocytosis.

What may happen to the size of the cell if it is placed in such solutions which vary in their concentration:

i. When placed in Hypotonic solution.

ii. When placed in Hypertonic solution.

iii. When placed in Isotonic solution.

What would happen to the life of a cell if the plasma membrane ruptures or breaks down?

What is nucleoid?

What does chromosome contain?