Cell biology TEST

Cell biology

Subjective Test(Theoretical) Maximum marks:30                                                                                                                                        Time limit:1 hour (i)         All questions are compulsory. (ii)        Questions 1 to 5 are very short answer type questions. These questions carry one mark each. (iii)       Questions 6 and 7 are short answer type questions. These questions carry two marks each. (iv)       Questions 8 and 9 are also short answer type questions. These questions carry three marks each. (v)        Question number 10 and 12 are long answer type questions and carry five marks each.

1.    Who discovered cells and how? Why is the cell called the structural and functional unit of life?

2.    Write 3 differences between prokaryotic and eukaryotic cell. Make a comparison and write down ways in which plant cells are different from animal cells.

3.    How does an Amoeba obtain its food?

4.    Can you name the two organelles we have studied that contain their own genetic material?

5.    Which organelle is known as the powerhouse of the cell? Why?How do substances like CO₂ and water move in and out of the cell? Discuss.

6.    What would happen to the life of a cell if there was no Golgi apparatus?

7.    Where do the lipids and proteins constituting the cell membrane get synthesized?

8.    Why are lysosomes known as suicide bags?

9.    Where are proteins synthesized inside the cell?

10.  Why cell membrane is called as selectively permeable membrane? Who discovered the structure of cell membrane? What would happen if the plasma membrane ruptures or breaks down?

11.  If the organisation of a cell is destroyed due to some physical or chemical influence, what will happen?

12.  Write down the difference between diffusion and osmosis. What is the difference between hypertonic and hypotonic solution.