Test Your Knowledge - Free MCQ PRACTICE
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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. If the ends of the following polysaccharide are pulled, which one would stretch the most?
A. Glycogen 
B. Starch 
C. Cellulose 
D. None of these 

2. A short molecule containing 2-20 nucleotide is
A. Plasmid 
B. Vector 
C. Oligonucleotide 
D. Mononucleotide 

3. Agrobacterium tumefaciens is
A. A bacterium that can be used to introduce DNA into plants 
B. A fungi that is used to produce antibiotics in large amounts 
C. A disease in humans that causes loss of weight 
D. A disease in humans that causes loss of sight 

4. The controversy regarding the use of Bt corn is that it
A. Is potentially harmful to monarch butterflies 
B. Is a potential allergen to humans 
C. Both A and B 
D. Can contaminate groundwater 

5. Transmission of a gene from male parent to female child to male grand child is known as
A. Holandric inheritance 
B. Maternal inheritance 
C. Quantitative inheritance 
D. Criss-cross inheritance 

6. Which technique is used to introduce genes into dicots?
A. Electroporation 
B. Particle acceleration 
C. Microinjection 
D. Ti plasmid infection 

7. Which of the following functional groups would make a carbon-based compound the least polar?
A. Phosphate 
B. Methyl 
C. Carboxyl 
D. Amino 

8. The Southern blotting technique depends on
A. Similarities between the sequences of probe DNA and experimental DNA 
B. Similarities between the sequences of probe protein and experimental protein 
C. Similarities between the sequences of probe RNA and experimental RNA 
D. The molecular mass of proteins 

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

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

11. Klinefelter syndrome is a manifestation of which chromosome aneuploidy?
A. XXX 
B. XYY 
C. XXY 
D. None of these 

12. DNA into fish is injected into
A. Pronuclei 
B. Cytoplasm 
C. Both A and B 
D. None of these 

13. For the recovery of citric acid after fermentation, Ca(OH)2 is added to the slurry to
A. Precipitate calcium citrate 
B. Precipitate calcium carbonate 
C. Precipitate calcium sulphate 
D. Precipitate calcium phosphate 

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. A micro array is an ordered array of microscopic elements on a planer substrate that allows the specific binding of
A. Gene or gene products 
B. Whole genome 
C. Both A and B 
D. None of these 

16. The spindle forms in the
A. G1 phase 
B. G2 phase 
C. M phase 
D. S phase 

17. A group of about 300 chlorophyll molecule acting together to trap photons and transfer energy to the pigment molecule at the reaction center may be called as
A. Harvesting unit 
B. Reaction center 
C. Photosynthetic unit 
D. Chloromass 

18. Which protein has been produced generating a transgenic sheep that is used for replacement therapy for individuals at risk from emphysema?
A. Plasminogen activator (tPA) 
B. A-anti trypsin (AAT) 
C. Casein 
D. Amyloid precursor proteins 

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

20. What is the desirable sugar content of the grapes required for the wine production?
A. 2-5% 
B. 5-10% 
C. 10-14% 
D. 14-20% 

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