Test Your Knowledge - Free MCQ PRACTICE
BIOTECHNOLOGY
by Dr K Chaudhry
BIOCHEMISTRY
BIOLOGY
BIOTECHNOLOGY
CHEMISTRY
COMPUTER
ELECTRICIAN
FITTER
GENERALKNOWLEDGE
INSURANCE
MACHINIST
MICROBIOLOGY
PATHOLOGY
PHARMACOLOGY
PHYSICS
ANATOMY
PHYSIOLOGY
FORENSICMEDICINE
OPERATIVEDENTISTRY
DENTISTRY
PERIODONTICS
PEDODONTICS
ENDODONTICS
COMMUNITYMEDICINE
OPHTHALMOLOGY
ENT
MEDICINE
SURGERY
OBSGYN
PAEDIATRICS
ORTHOPAEDICS
DERMATOLOGY
ANAESTHESIA
RADIOLOGY
PSYCHIATRY
ELECTRONICENGINEERING
DRIVINGTEST
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. Diethyl stilbestrol (DES), a synthetic estrogen causes
A. chromosome lagging
B. disruption of mitotic spindle
C. centriole elongation
D. all of the above

2. Sugar content of the fermentation medium for citric acid is maintained at
A. 10-15%
B. 15-20%
C. 20-25 %
D. 25-30 %

3. Auxanometer is used for measuring
A. respiratory activity
B. photosynthetic activity
C. growth activity
D. osmotic pressure

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

5. Which phase of mitosis is associated with chromosomes aligned at the center of the cell and centromeres divide?
A. anaphase
B. interphase
C. metaphase
D. prophase

6. Encapsulation is necessary to produce and protect synthetic seeds. The encapsulation is carried out by various types of hydrogels, which are
A. soluble in water
B. soluble in organic solvents
C. insoluble in water
D. insoluble in organic solvents

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. 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

9. Inundation involves use of a/an
A. large number of organisms over a short time to suppress/destroy a population
B. organism over a short time to suppress/destroy a population
C. large number of organisms over a long time to suppress/destroy a population
D. organism over a long time to suppress/destroy a population

10. 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

11. What is the approximate size (in kb) of the melon mitochondrial genome?
A. 600 kilobase
B. 1200 kilobase
C. 2400 kilobase
D. 3000 kilobase

12. 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

13. The preserved embryoids are termed as
A. synthetic seeds
B. semi-synthetic seeds
C. natural seeds
D. fermented seeds

14. Nitrogen in the plant cell culture media is provided by either ammonia or nitrate salt. In the media
A. utilization of ammonium cause culture pH to drop while utilization of nitrate cause culture pH to rise
B. utilization of nitrate cause culture pH to drop while utilization of ammonium cause culture pH to rise
C. utilization of both ammonium and nitrate result in rise in pH
D. utilization of both ammonium and nitrate result in drop in pH

15. Involvement of sugarcane phytoalexins in red-hot resistance has been observed. The phytoalexin compound is reported to be
A. 3-deoxyanthocyanidin
B. luteolinidin
C. apigeninidin
D. 5-0 apigeninidin

16. 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

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

18. Starch content of potatoes can be increased by using a bacterial gene, known as
A. sucrose phosphate synthase gene
B. ADP glucose pyrophosphorylase gene
C. polygalactouranase gene
D. none of the above

19. If the RBC of human were kept in 0.9% NaCl solution, what sort of change will occur to RBC?
A. Cell will Burst
B. Cell will shrink
C. No change to RBC
D. RBC will destroy

20. 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. Introduction of a new organ in an animal body with a view to create genetic mutation in the progenies of that animal
C. Cultivation of organs in a laboratory through the synthesis of tissues
D. The aspects of culture in community which are mainly dedicated by the need of a specified organ of the human body

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