12-bio-botany-unit-IV Biotechnology
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Prepared by Mr. D. Rajamani, M. Sc. ,M. Ed. , P. G. Asst Botany A. C. S Mat. Hr Sec. School, Arni. Tiruvannamalai Dist ; &nbs p; & www. Padasalai. Net
- 1.Restriction enzymes are synthesized by
- A.
Bacteria only
- B.
Yeast and bacteria only
- C.
Eukaryotic cells only
- D.
All kinds of cells
- 2.Each restriction enzyme cleaves a molecule only at
- A.
Nucleotide sequence
- B.
the ends of genes
- C.
Methyl groups
- D.
The time of DNA replication
- 3.One of the following process is employed to introduce a foreign gene into a cell
- A.
Electroporation
- B.
Electrolysis
- C.
Plasmid
- D.
Ligation
- 4.A toxic protein called delta endotoxin is insecticidal and it is produced by
- A.
Bacillus thuringiensis
- B.
Escherichia coli
- C.
Streptomyces griseus
- D.
Bacillus lactii
- 5.The number of transgenic plants available to-day are approximately
- A.
Fifty
- B.
Six
- C.
Two
- D.
Twelve
- 6.Pseudomonas putida is a engineered bacterium that can
- A.
Digest crude oil slick
- B.
Produce a hormone
- C.
Produce a antibiotic
- D.
Pollute the soi
- 7.The inherent potential of any living plant cell to develop into entire organism is clled
- A.
Totipotency
- B.
Differentiation
- C.
Organogenesis
- D.
Morphogenesis
- 8.The function of cytokinin is to increase
- A.
Cell division
- B.
Cell elongation
- C.
Fruit initiation
- D.
Differentiation
- 9.By the application of tissue culture, one important product is formed
- A.
Artificial synthetic seeds
- B.
Many seeded fruit
- C.
Triploid endosperm
- D.
Induction of flowers
- 10.The two protoplasts are fused with a fusogen called
- A.
Polyethylene glycol (PEG)
- B.
Polyvinyl chloride (PVC)
- C.
Polyethane glycol (PEG)
- D.
Phosphoric ethane
- 11.Somatic hybrids are produced through
- A.
Protoplasmic fusion
- B.
Asexual fusion
- C.
Vegetative propagation
- D.
Grafting
- 12.One of the following organism is a SCP
- A.
Spirulina
- B.
Nostoc
- C.
Rhizobium
- D.
Mushroom
- 13.Enriched vitamin tablets are produced from the following organism for human consumption
- A.
Spirulina
- B.
Nostoc
- C.
Yeast
- D.
Mushroom
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