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. Range of osmolarity tolerated/accepted in mOsm/Kg of H2O by mammalian cells is
A. 150-300
B. 280-360
C. 300-325
D. 360-400
3. Which technique is used to introduce genes into dicots?
A. electroporation
B. particle acceleration
C. microinjection
D. Ti plasmid infection
4. Fermentation medium for oxytetracyclin (terramycin) consist of
A. CSL, starch, (NH4)2 SO4, sodium chloride and CaCO3
B. CSL, (NH4)2 SO4, sodium chloride and CaCO3
C. CSL, starch,(NH4)2 SO4, ammonium chloride and CaCO3
D. CSL,(NH4)2 SO4, ammonium chloride and CaCO3
5. Which group of land plants is most restricted to moist environments?
A. Lycophyta
B. Sphenophyta
C. Bryophyta
D. Angiosperms
6. Phloem is composed of
A. vessel elements and companion cells
B. tracheids and vessel elements
C. sieve-tube elements and companion cells
D. tracheids and sieve-tube elements
7. What is the approximate size (in kb) of the melon mitochondrial genome?
A. 600 kilobase
B. 1200 kilobase
C. 2400 kilobase
D. 3000 kilobase
8. The disorder in which of the following may cause "Ehlers-Danlos Syndrome"?
A. Dlashin protein
B. Collagen protein
C. Fibrin protein
D. Globulin protein
9. The gene coding for VP1 is cloned in
A. pMB 9
B. pBR 322
C. pUC 18
D. pUC 19
10. Which of the following is true for the ale beer?
A. Top yeast of S cerevisiae is used
B. Fermentation is quick and completes in 5-7 days
C. Quantity of hops used is more than in lager beer
D. All of the above
11. Human serum albumin has been synthesized by
A. transgenic potato and tobacco plants
B. transgenic maize plants
C. transgenic wheat plants
D. any of the above
12. Chemically synthesized DNA sequences for the two chains are separately inserted into the plasmid pBR 322 by the side of
A. ß-Galactosidase
B. galactokinase
C. acid phosphatase
D. glucokinase
13. Maximum size of foreign DNA that can be inserted into a replacement vector is
A. 25-30 kb
B. 18-20 kb
C. 20-25 kb
D. 40-50 kb
14. Which of the following is the word used to describe what happens when the nucleus of a sperm joins with the nucleus of an egg cell?
A. Sex
B. Fertilisation
C. Intercourse
D. Reproduction
15. Yeast Replicating plasmids (YRp) carry
A. centromere
B. telomere
C. autonomously replicating sequence
D. both A and (c)
16. Vinegar is typically produced in fed batch reactors because
A. a fed batch reactor can be used to maintain low acetic acid concentrations
B. a fed batch reactor can be used to maintain low ethanol concentrations
C. acetic acid bacteria tend to ferment at high ethanol concentrations
D. all of the above
17. Which of the following is not true about the helper plasmids?
A. These can replicate in Agrobacterium
B. These help in the mediating conjugation of intermediate vectors
C. These can't replicate in Agrobacterium
D. All of the above
18. In the meiotic cell divison in daughter cells are produced by two successive division in which
A. first division is equational, second is reductional
B. first division is reductional and second is equational
C. both divisions are reductional
D. both divisions are equational
19. Some cross reactions with monoclonal antibodies (MAbs) can occur. Unexpected cross reactions occur more frequently with
A. Ig MAbs
B. IgG
C. IgA
D. IgE
20. The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as
A. penetrance
B. expressivity
C. inheritance percent
D. environmental influence
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