CELL AS A UNIT OF LIFE

Cell as a Unit of life

1. Longest cell in our body is nerve fibre. The smallest cell is of

a. Human egg b. Eye c. Kidney and intestine d. Sperm

2. Study of nuclear cytology is

a. Neurology b. Radiology c. Karyology d. Rhinology

3. A plant cell differs from animal cell in the absence of

a. ER b. Mitochondria c. Centrioles d. Ribosomes.

4. Who proved that cells of carrot root are totipotent?

a. Steward b. Haberlandt c. Harrison d. White.

5. An undefined fibrillar nucleus is seen in

a. Prokaryotes b. Eukayotes c. Cells of higher plants d. Cells of higher animals

6. First modification in cell theory was done by

a. Virchow b. Strasburger c. Flemming d. Sachs.

7. The concept of cell lineage (cells arise from preexisting cells only) was propounded by

a. purkinje b. Virchow c. Swammerdam d. Robert Hooke.

8. The most complex cellular structure are found in

a. Bacteria b. Protpzoans c. algae d. Fungi

9. All cells contain a living substance which is called Protoplasm It was first observed by

a. Purkinge b. Von Mohl c. Max Schultze d. Corti.

10. Which organelle help in the synthesis of lipids, cholexterol, steroids and visual pigments in

epithelial cells of retina?

a. SER b. RER c. Golgi bodies d. Ribosomes

11. ER of rapidly dividing cells is

a. Non functional b. Poorly developed c. Highly developed d. Absent

12. Endoplasmic reticulum arises from

a. Nuclear membrane b. Golgi system c. Cell membrane d. ER itself

13. Ergastoplasm is

a. ER b. Ribosomes c. Golgi bodies d. Cytoplasm

14. What is common in prokaryotes and eukaryotes

a. Ribosomes b. Plastids c. Thylakoids d. Inclusions

15. Ribosomes can be observed in a cell only under

a. Light microscope b. Electron microscope c. Both of these d. None of these

16. One of the organelle showing polarity is

a. Ribosomes b. DNA c. Golgi bodies d. Lysosomes.

17. Secretory vesicles are pinched off as zymogen granules from_________ side of

dictyosomes

a. Convex b. Concave c. Plain d. All sides.

18. Solar energy is trapped in

a. Stroma b. Lamellae c. DNA d. Oxysomes

19. The number of mitochondria increases in the cell of

a. Seeds b. Germinating seeds c. Dry seeds d. Dormant seeds.

20. Enzyme ATPase is found in

a. F1 b. F0 c. F1 - F0 particle d. None of the above but in cytoplasm.

21. de Duve shared Nobel prize of 1974 with Palade and Claude for the discovery of

a. Ribosomes b. Lysosomes c. Peroxisomes d. Microcosms

22. Diameter of micro tubules is

a. 25nm b. 15nm c. 10nm d. 25Å

23. Heeng (Asafoetida) is a oleoresin obtained from

a. roots b. Stems c. flowers d. leaves

24. Tomato are rich in

a. Oxalic acid b. Malic acid c. Citric acid d. Fumeric acid.

25. Nucleus was discovered in root cells of orchids by

a. Brown b. Hooke c. Strasburger d. Bowman

ANSWERS

1. c 2. c 3. c 4. a 5. a 6. a 7. b 8. b 9. d 10. a

11. b 12. a 13. a 14. a 15. b 16. c 17. b 18. b 19. b 20. a

21. b 22. a 23. a 24. c 25. a