THE FUNDAMENTAL UNIT OF LIFE -Part 3

THE FUNDAMENTAL UNIT OF LIFE Lesson 1

Question and Answers Continued

3. What would happen if the plasma membrane ruptures or breaks down?
A massive rupture of the plasma membrane where the cytoplasm and cell organelles will be released will result in the death of the cell .


4. What would happen to the life of a cell if there was no Golgi apparatus?
Lysosomes which disposes the waste in animal cell and destroy foreign materials like bacteria and virus are formed in the Golgi apparatus. If there is no Golgi apparatus then the waste formation will accumulate in the cell.Foreign virus and bacteria will invade and destroy the cell.Golgi apparatus transfers proteins and cellular secretions from one part of the cell to another and is also involved in the synthesis of cell wall, plasma membrane and lysosomes.The cell will not be able to transport its products and function of the cell will be affected which will finally result in the destruction of the cell.


5. Which organelle is known as the power house of the cell? Why?
Mitochondria is known as the power house of the cell because they are considered as a seat of breakdown of food materials in the cells resulting in the release of energy during respiration.

6. Where do lipids and proteins constituting the cell membrane get synthesized?
Lipids and proteins get synthesized in the endoplasmic reticulum of the cells.

7. How does an Amoeba obtain its food?
An Amoeba obtains its food by the process of endocytosis. It is due to the flexibility of cell membrane as it enables the cell to engulf food and other materials from its external environment.

8. What is osmosis?
Osmosis is the diffusion of water through a semipermeable membrane. It takes place across the membrane till the equilibrium is reached. Water moves from a region of high chemical potential to a region of low chemical potential.