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Given below is a diagrammatic cross section of a single loop of the human cochlea.
diagram
Which one of the following options correctly represents the names of three parts? 

  • B: Perilymph
    C: SPerilymph
    D: Secretory Cells
  • C :Endolymph
    D : Sensory hair cells
    A: Serum

  • D: Sensory hair cells 
    A: Endolymph
    B: Tectorial membrane

  • D: Sensory hair cells 
    A: Endolymph
    B: Tectorial membrane


D.

D: Sensory hair cells 
A: Endolymph
B: Tectorial membrane

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What is true about Bt toxin

  • The inactive protoxin gets converted into active form in the insect gut

  • Bt protein exists as active toxin in the bacillus

  • The activated toxin enters the ovaries of the pets to sterilise it and thus prevent its multiplication

  • The activated toxin enters the ovaries of the pets to sterilise it and thus prevent its multiplication


Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

  • GUU, GCU - Alanine

  • UAG, UGA - stop

  • AUG, ACG - start/ methionine

  • AUG, ACG - start/ methionine


Stirred -tank bioreactors have been designed for 

  • the addition of preservatives of the product

  • purification of the product

  • ensuring anaerobic conditions in the culture vessel

  • ensuring anaerobic conditions in the culture vessel


Restriction endonucleases are enzymes which

  • make cuts at specific positions within the DNA molecule

  • recognize a specific nucleotide sequence for binding of DNA ligase

  • restrict the action of the enzyme DNA polymerase

  • restrict the action of the enzyme DNA polymerase


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