Test Your Knowledge - Free MCQ PRACTICE
by Saksham Chaudhry : Paschim Vihar, New Delhi 110063 T: 1142316457, 9810570740
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A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. In monoclonal antibody technology, tumor cells that can replicate endlessly are fused with mammalian cells that produce an antibody. The result of this cell fusion is a
A. Hybridoma 
B. Myeloma 
C. Natural killer cell 
D. Lymphoblast 

2. Toxicity due to accumulation of ammonia can be overcome
A. By substituting glutamine by glutamate 
B. By controlled addition of glutamine at low level 
C. By removal of ammonia or ammonium from culture medium 
D. All of the above 

3. What is meant by 'Organ culture' ?
A. Maintenance alive of a whole organ, after removal from the organism by partial immersion in a nutrient fluid 
B. The aspects of culture in community which are mainly dedicated by the need of a specified organ of the human body 
C. Cultivation of organs in a laboratory through the synthesis of tissues 
D. Introduction of a new organ in an animal body with a view to create genetic mutation in the progenies of that animal 

4. The tumor phenotype, which can be maintained indefinitely in tissue culture, results from the expression of genes on the
A. T-DNA 
B. C-DNA 
C. R-DNA 
D. M-RNA 

5. Problems in obtaining large amounts of proteins encoded by recombinant genes can often be overcome by using
A. BACS 
B. Expression vectors 
C. YACS 
D. All of these 

6. Which of the following is not true about the helper plasmids?
A. These can't replicate in Agrobacterium 
B. All of the above 
C. These help in the mediating conjugation of intermediate vectors 
D. These can replicate in Agrobacterium 

7. The event(s) which does not occur during interphase, is/are
A. Chromatin condenses 
B. Protein Synthesis 
C. Organelles replication 
D. DNA replication 

8. Which group of plants has the greatest diversity (i.e. the most species) living today?
A. Bryophyta 
B. Lycophyta 
C. Gymnosperms 
D. Angiosperms 

9. Which of the following viruses are used as vectors for transferring genes to animal cells?
A. SV 40 virus 
B. Bovine papilloma virus (BVP) 
C. Retroviruses 
D. All of these 

10. During nitrogen fixation the enzyme nitrogenase catalyse the reaction. The reaction is high energy demanding which require approximately
A. 12 ATP 
B. 18 ATP 
C. 25 ATP 
D. 7 ATP 

11. The approach (s), which is/are currently followed to produce human monoclonal antibodies, is/are known as
A. Transformation of antigen specific B lymphocytes (EBV) 
B. Hybridization of 6-thioguanine-resistant human plasmacytoma with immune human lymphocytes 
C. Combination of EB Vand hybridoma techniques 
D. All of these 

12. Bar eye character of Drosophila is due to
A. Due to presence of additional X-chromosome 
B. Due to a point mutation in eye-locus 
C. Deletion in region of 16A of X chromosome 
D. Duplication in region of 16A of X chromosome 

13. Vectors are
A. Molecules that help in replication 
B. Molecules that degrade nucleic acids 
C. Molecules that protect host cells from invasion by foreign DNA 
D. Molecules that are able to covalently bond to and carry foreign DNA into cells 

14. Enzymes that recognize and cleave specific 4 to 8 base pair sequences of DNA are
A. DNA ligase 
B. Helicases 
C. Restriction endonucleases 
D. DNA gyrase 

15. The element neon (Ne) has eight electrons in its outermost electron shell. How many covalent bonds will Ne readily form?
A. None 
B. One 
C. Two 
D. Four 

16. Recalcitrant seeds are
A. Resistant to drying and freezing temperature 
B. Killed by drying and freezing temperature 
C. Both A and B 
D. None of above 

17. Fermentation medium for oxytetracyclin (terramycin) consist of
A. CSL,(NH4)2 SO4, ammonium chloride and CaCO3 
B. CSL, starch, (NH4)2 SO4, sodium chloride and CaCO3 
C. CSL, (NH4)2 SO4, sodium chloride and CaCO3 
D. CSL, starch,(NH4)2 SO4, ammonium chloride and CaCO3 

18. For culturing, plasma from the adult chicken is preferred to mammalian plasma because
A. It forms a semi solid coagulum 
B. It is too opaque 
C. It forms a clear and solid coagulum even after dilution 
D. It doesn't produce solid clots 

19. The disorder in which of the following may cause "Ehlers-Danlos Syndrome"?
A. Dlashin protein 
B. Collagen protein 
C. Fibrin protein 
D. Globulin protein 

20. In a __________ protocol, bacteria with engineered abilities to detoxify pollutants are intentionally released in an area.
A. Microcosm establishment 
B. Mibridization 
C. Bioremediation 
D. Rhizosecretion 

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