Multiple Choice Questions

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Which one of the following statements is correct with respect to AIDS?

  • The HIV can be transmitted through eating food together with an infected person

  • Durg addicts are least susceptible to HIV infection

  • AIDS patients are being fully cured cent percent with proper care and nutrition

  • AIDS patients are being fully cured cent percent with proper care and nutrition


D.

AIDS patients are being fully cured cent percent with proper care and nutrition

AIDS (Acquired Immuno Deficiency Syndrome) is a viral disease of the immune system. It is caused by virus Human Immunodeficiency Virus (HIV). In AIDS patients, the virus homes on CD4 + T -cells (helper T - lymphocytes), infecting and killing them until none are left. Without their crucial immune system cells, the body cannot mount a defence against invading bacteria or viruses. AIDS patient dies off infections that a healthy person could fight off.

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A common biocontrol agent for the control of plant diseases is

  • Baculovirus

  • Bacillius thuringiensis

  • Glomus

  • Glomus

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The biomass available for consumption by the herbivores the decomposers is called

  • net primary productivity

  • secondary productivity

  • standing crop

  • standing crop

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Which one of the following is used as a vector for cloning the gene into higher organisms?

  • Baculovirus

  • Salmonella typhimurium

  • Rhizopus nigricans

  • Rhizopus nigricans

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Widal test is used for the diagnosis of 

  • Malaria 

  • pneumonia

  • tuberculosis

  • tuberculosis

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Select the correct statement from the ones given below with respect to dihybrid cross. 

  • Tightly linked genes on the same chromosome show higher recombinations

  • Genes far apart on the same chromosome show very few recombinations

  • Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones.

  • Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones.

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Which one of the following is an example of ex- situ conservation?

  • Wildlife sanctuary

  • Seed bank

  • Sacred groves

  • Sacred groves

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Which one of the following palindromic base sequences in DNA can be easily cut at about the middle be some particular restriction enzyme?

  • 5'-CGTTCG -3'
    3'-ATCCTA-5'

  • 5'-GATATG-3'
    3'-CTACTA-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

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Breeding of crops with high levels of minerals, vitamins and proteins is called

  • somatic hybridization

  • biofortification

  • biomagnification

  • biomagnification

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The one aspect which is not a salient feature of genetic code is its being

  • degenerate

  • ambiguous

  • universal

  • universal

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