12-bio-botany-unit-IV Biotechnology

13 Questions

Settings
Please wait...
12-bio-botany-unit-IV Biotechnology

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


Questions and Answers
  • 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