Life Science Mock Test CSIR NET Exam - Part 11

This Quiz is posted with the sole aim of guiding the aspirants of UGC-NET / CSIR -NET Exam to the path of success. To sharpen the edges of your own intelligence and practice, in a structured and concrete manner to ensure you definite Success in your endeavor and will Pave your way for a successful career in Teaching (or) Research Profession . All the very best...... Knock the door of success......
  1.  Plasmids often encode for proteins that ________-.
    1.  are involved in DNA replication
    2.  are required for cellular growth
    3.  confer resistance to antibiotics
    4.  are involved in translation

  2. Gene transfer in bacteria enhances ____________.
    1.  Adaptability
    2.  Virulence
    3.  Genetic variability
    4.  Virulence, variability and Adaptability

  3. The 50 S ribosomal subunit is present in _____________.
    1.  Both prokaryotic and eukaryotic cell
    2.  Eukaryotic cell only
    3.  Prokaryotic cell only
    4.  Eubacteria only

  4. One picomole of a 2.0 kb gene (X) with EcoRI ends was inserted at an EcoRI site present in the middle of another 1 p mole 2 kb gene (Y) by ligation. The ligated DNA product was completely digested by EcoRI. The resultant product will be __________.
    1.  0.5 p mole of a 3 kb DNA
    2.  2 p mole of a 3 kb DNA
    3.  0.5 p mole each of a 2 kb DNA and two 1 kb DNA
    4.  1 p mole each of a 2 kb DNA and two 1 kb DNA

  5. The mean for a binomial distribution of 10 samples having a probability of occurrence of 0.4 will be ______________.
    1.  5
    2.  12
    3.  45
    4.  4

  6. Purified duplex DNA molecules cannot exist in which of the following forms?
    1.  Circular and supercoiled
    2.  Linear and supercoiled
    3.  Linear
    4.  Circular and relaxed

  7. DEAE and CM cellulose are widely used resin for separation of _______.
    1.  proteins and nucleic acid 
    2.  carbohydrates
    3.  lipids
    4.  lipids and nucleic acid

  8. Water potential in plants is affected by ___________.
    1.  Absorptive forces
    2.  Hydrostatic pressure
    3.  Solute concentration
    4.  All-Solute, Hydrostatic and Absorptive forces

  9. Solenoid and Supersolenoid are present in
    1.  nerve fibre
    2.  muscle fibre
    3.  chromatin fibre
    4.  cartilage fibre

  10. The shape of cell is related to _______.
    1.  situation
    2.  medium
    3.  size
    4.  function



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