most repeated question of biology for osstet, tet, ctet, cht,neet, bed ,medical exam

 BIOLOGICAL SCIENCE

1. The chromosomes are made up of

a) Protein                           b) Carbohydrate                                       
                   
c) Ribonucleic Acid          d) Deoxyribonucleic Acid

2. The common chemical Name of secondary walls of xylem cells is 

a) Amino acid             b) Chitin                                   eduodialifejkc.blogspot.com
c) Lignin                     d) Peptidoglycan

3. The scientist Rudolf Virchow proposed extension of cell theory in 

a) 1842            b)1868
c)1895             d) 1855

4. The cells that surrounds stomatas in epidermis of leaves are called

a) Diffused cells         b) Osmotic cells
c) Guard cells             d) Hyper cells 

5. The chromosomes are visible in nucleus during

a) Vacuoles formation      b)Energy formation 
c) Cell division                d)  Ribosome formation

6. The mitochondria is the place for 

a) Oxygenation               b) Aerobic reaction
c) Anaerobic reaction      d)Protein synthesis              
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7. The bacteria are also known as 

a) Mycoplasm            b) Cytoplasm
c) Macroplasm           d) Microplasm

8. The organism whose cell wall is not made up of cellulose is 

a) Mosses          b) Volvox 
c) Algae            d) Fungi 

9. The cell wall of fungi is made up of 

a)Chitin                b) Plasmodesmata
c) Plasmodium     d) Lignin

10. Chromosomes can be counted best at the stage of 

a)Prophase              b) Telophase
c) Metaphase          d) Anaphase

11. The stage in which daughter chromosomes move towards the poles of the spindle is 

a) Anaphase          b) Metaphase                              eduodialifejkc.blogspot.com   

c) Prophase           d) Telophase

12. Cell theory was propounded by 

a) Schleiden and Schwann       b) Watson and Crick
c) Mendel and Morgan            d) Wallace and Darwin

13. The figures of cork cells as seen by Robert Hooke were published in his book

a) Origin of Species           b) Plant Kingdom
c) Genera Plantarum         d) Micrographia

14. The term "Protoplasm" was given by 

a)Purkinje         b) Fischer
c) Brown          d) Dujardin

15. Who first coined the word "Cell" ?

a) Aristotle      b) Hooke 
c) Schwann    d) Leeuwenhoek 

16. Membranes occurs in 

a) Cytoplasm, Chloroplast & mitochondria              b) Cytoplasm, Nucleic & Starch grains
c) Chromosomes , Chloroplasts & Starch grains     d) Nuclei, Chromosomes & Mitochondria

17. Chemical nature of ribosomes is             

a) Beta Galactosidase      b) Proteins & Lipids
c) Proteins & RNA          d) Glucose & Sucrose

18. All are membrane bounded cell organelles except 

a) Mitochondria            b) Spherosomes                  eduodialifejkc.blogspot.com

c) Lysosomes                d)Ribosomes

19. The fine network of membranes distributed throughout the cytoplasm in a cell is 

a) Golgi body        b) Lysosomes 
c) Mitochondria    d) Endoplasmic Reticulum

20. Dictyosomes are 

a) Place of flagellar organelles      b) Class of Ribosomes 
c) Golgi bodies                            d) Respiratory Particles


                                                                   

                                                                               eduodialifejkc.blogspot.com

ANSWER- 1. A   2. C  3. D   4. C   5. C   6. B  7. A   8. D   9. A  10. C

11. A  12. A  13. D  14. A  15. B   16. A   17. C  18. D  19. D  20. C

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