Human Health and Disease


  1. Chemically an antibody is a









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    Antibodies are specific proteins synthesized by the host in response to an antigen. All antibody molecules are immunoglobulins.

    Correct Option: C

    Antibodies are specific proteins synthesized by the host in response to an antigen. All antibody molecules are immunoglobulins.


  1. A cell coded protein formed in response to infection with most animal viruses is









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    A special defence system works specially against viral infection. It has no effect on micro-organism. Cells invaded by a virus produce an antiviral protein called interferon (IFN). The latter is released from the infected cell and on reaching the nearby non-infected cells it makes them resistant to the virus infection.

    Correct Option: C

    A special defence system works specially against viral infection. It has no effect on micro-organism. Cells invaded by a virus produce an antiviral protein called interferon (IFN). The latter is released from the infected cell and on reaching the nearby non-infected cells it makes them resistant to the virus infection.



  1. Obstacle to large scale transplantation of organs is









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    The major obstacle in transplantation of organs is that the recipient body does not accept the donor’s organ. The body defence mechanism reject & treat the transplanted organ as a foreign particle and reacts actively.

    Correct Option: B

    The major obstacle in transplantation of organs is that the recipient body does not accept the donor’s organ. The body defence mechanism reject & treat the transplanted organ as a foreign particle and reacts actively.


  1. Which of the following statements is not true for cancer cells in relation to mutations?









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    Telomerase production is increased in cancer. Telomerase has been examined in hundreds of studies as a potentially sensitive biomarker for screening, early cancer detection, prognosis or in monitoring as an indication of residual disease.

    Correct Option: D

    Telomerase production is increased in cancer. Telomerase has been examined in hundreds of studies as a potentially sensitive biomarker for screening, early cancer detection, prognosis or in monitoring as an indication of residual disease.



  1. Which one of the following is not a property of cancerous cells whereas the remaining three are?









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    Contact inhibition is a property of normal cell not of cancer cells. Due to this property they remain in contact with other cells inhibit their growth.

    Correct Option: D

    Contact inhibition is a property of normal cell not of cancer cells. Due to this property they remain in contact with other cells inhibit their growth.