Test your knowledge about Cell Biology

1.  Citric acid cycle takes place in the    

a. Mitochondria                  b. Lysosome

c. Endoplasmic reticulum   d. All the above. 

2. Prokaryotic ribosomes are

a. 10 S           b. 20 S         c. 70S         d. 80S

3. The organelle that lacks a double membrane is

a. Mitochondria                  b. Lysosome

c. Ribosome                       d.  Nucleus

4. Cell wall is rigid because of

a. Pectin                      b. Lignin

c. Hemicellulose         d. Cellulose

5. Major function of mitochondria in a cell is

a. Secretion                      b. Osmoregulation

            c. Excreation                    d. Fat synthesis

6. Energy currency of cell is

a. ATP                    b. NAD           c. FAD          d. FMN

7. Autolysis is a function of

a. Peroxisomes                 b.Glyoxisomes

c. Lysosomes                   d. Kinetosomes

8. An octamer of four histones complexed with DNA is called

a. Centrosome                  b. Nucleosomes

c. Mesosomes                  d. Endosomes

9. Most of the hydrolytic enzymes of lysosomes fuction at

a. Acidic pH                          b. Basic pH

c. Neutral pH                        d. Any pH

10. Ribosomes were discovered by

a. Palade              b. de Roberits           c. Golgi            d. Porter

11. Chloroplasts contain

a. 50s ribosomes          b. 80s ribosomes

c. 70s ribosomes          d. No ribosomes

12. Lysosomes are discovered by

a. Robert Hook               b. Purkyne

c. Hertwig                      d. Christian de Duve

13. Which is the smallest cell organelle?

a. Lysosomes                       b. Ribosomes

c. Sphaerosomes                 d. Glyoxisomes

14. The organelle not bound by a membrane is

a. Nucleus                          b. Mitchondria

c. Centriode                       c. Chloroplast

15. Lysosomes are generally found in
1. Animal cells
2. Both animal and plant cells
3. Planet cells
4. Bacterial cells

16. Silicified cell wall is unique to

a. Blue Green Algae           b. Green bacteria

c. Diatoms                          d. Dinoflagellates

17. The term protoplast was coined was coined by
1. Robert Hooke
2. Antony Von Leeuwenhoek
3. Purkinje
4. Hertwig

18. Ribosomes can be seen within

a. Endoplasmic reticulum         b. Lysosomes

c. Golgi complex                      d. Mitochondria

19. Acrosome of human sperm is made up of

a. Endoplasmic reticulum            b. Golgi complex

c. Lysosomes                               d. Centroids

20. Glycolysis pathway was discovered by

a. Calvin                          b. Krebs

c. J.C. Bose                     d. None of the above

21. Both respiration and photosynthesis require

a. Magnesium                      b. Cytochrome

c. Energy                             d. All of above

22. DNA replication takes place in

a. S phase                     b. Go phase

c. G2 phase                  d. M phase

     ANSWERS:

    

     1.a        2.c      3.b      4.b        5.d       6.a       7.c

     8.b        9.a     10.a     11.c      12.d     13.a     14.c

     15.b      16.c   17.c     18.d      19.b     20.b     21.d

     22.a