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. The preserved embryoids are termed as
A. synthetic seeds
B. semi-synthetic seeds
C. natural seeds
D. fermented seeds
2. If starch containing substrates are used for ethanol production, yeast strain can't be used directly because
A. it doesn't contain amylases to hydrolyze starch
B. starch is not a suitable substrate for the production of ethanol
C. it is converted to pentose sugar
D. none of the above
3. How many nucleotides are there in Ss RNA molecule of picorna virus causing FMD?
A. 1000
B. 5000
C. 8000
D. 10000
4. Vectors are
A. molecules that degrade nucleic acids
B. molecules that help in replication
C. molecules that are able to covalently bond to and carry foreign DNA into cells
D. molecules that protect host cells from invasion by foreign DNA
5. What are different substrates used for ethanol production?
A. Starch containing substrate
B. Juices from sugarcane or molasses or sugar beet
C. Waste product from wood or processed wood
D. All of the above
6. Transmission of a gene from male parent to female child to male grand child is known as
A. holandric inheritance
B. quantitative inheritance
C. criss-cross inheritance
D. maternal inheritance
7. Virulence trait of Agrobacterium tumefaciens is borne on
A. chromosomal DNA
B. tumour inducing plasmid DNA
C. both chromosomal and plasmid DNA
D. cryptic plasmid DNA
8. Which of the following adaptations would it be desirable for a farmer to breed into a crop of wheat?
A. Early ripening
B. Resistance to disease
C. Resistance to pests
D. All of these
9. Spirit vinegar is produced from
A. fruit juices
B. malted grain
C. ethanol
D. ale
10. A(n) __________ is an excised piece of leaf or stem tissue used in micropropagation.
A. microshoot
B. medium
C. extant
D. scion
11. The evaporation of water from leaves is called
A. transpiration
B. cohesion
C. tension
D. pressure flow
12. Which of the following vector can maintain the largest fragment of foreign DNA?
A. YAC
B. Cosmid
C. Plasmid
D. Phage
13. The rate of degradation and microbes resistance to toxic pollutants remain better when the
A. mixed cell population is used
B. individual cell is used
C. mixed cell population along with metals is used
D. individual cell along with metal is used
14. Diethyl stilbestrol (DES), a synthetic estrogen causes
A. chromosome lagging
B. disruption of mitotic spindle
C. centriole elongation
D. all of the above
15. 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
16. Direct DNA uptake by protoplasts can be stimulated by
A. polyethylene glycol (PEG)
B. decanal
C. luciferin
D. all of these
17. The event(s) which does not occur during interphase, is/are
A. Chromatin condenses
B. Protein Synthesis
C. Organelles replication
D. DNA replication
18. 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
19. 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
20. Which of the following from a blood clot stimulates the growth of cells in the healing process?
A. EGF
B. PDGF
C. MPF
D. NGF
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