Human Health and Disease


  1. The part of life cycle of malarial parasite Plasmodium vivax, that is passed in female Anopheles is









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    Plasmodium vivax completes sexual cycle or gamogony in female Anopheles mosquito. Asexual cycle is passed in man (schizogony).

    Correct Option: A

    Plasmodium vivax completes sexual cycle or gamogony in female Anopheles mosquito. Asexual cycle is passed in man (schizogony).


  1. Botulism caused by Clostridium botulinum affects the









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    Botulism is caused by the ingestion of food containing the toxin of Clostridium botulinum. Before the introduction of a strict canning code, the food canning industry was responsible for many deaths each year from botulism (Food poisoning). Botulism is a rare but serious paralytic illness caused by a nerve toxin that is produced by the bacterium Clostridium botulinum. This bacterium produces an exotoxin which is highly toxic for the synaptic ends of the nerves where it blocks the release of acetylcholine which is a chemical necessary for the transmission of nerve impulse across the synapses.

    Correct Option: B

    Botulism is caused by the ingestion of food containing the toxin of Clostridium botulinum. Before the introduction of a strict canning code, the food canning industry was responsible for many deaths each year from botulism (Food poisoning). Botulism is a rare but serious paralytic illness caused by a nerve toxin that is produced by the bacterium Clostridium botulinum. This bacterium produces an exotoxin which is highly toxic for the synaptic ends of the nerves where it blocks the release of acetylcholine which is a chemical necessary for the transmission of nerve impulse across the synapses.



  1. Diptheria is caused by









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    Diptheria is a highly infectious disease caused by Cornybacterium diptheriae which liberates soluble toxin. The toxin affects nerves and cause double vision, difficulty in swallowing and paralysis of breathing muscles and limbs.

    Correct Option: A

    Diptheria is a highly infectious disease caused by Cornybacterium diptheriae which liberates soluble toxin. The toxin affects nerves and cause double vision, difficulty in swallowing and paralysis of breathing muscles and limbs.


  1. In which one of the following pairs of diseases both are caused by viruses?









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    Tetanus and typhoid are caused by bacteria. Whooping cough is caused by bacteria. Sleeping sickness is caused by parasitic flees. Syphilis is caused by bacteria while AIDS is final stage of HIV viral disease. Measles and Rabies are caused by virus.

    Correct Option: D

    Tetanus and typhoid are caused by bacteria. Whooping cough is caused by bacteria. Sleeping sickness is caused by parasitic flees. Syphilis is caused by bacteria while AIDS is final stage of HIV viral disease. Measles and Rabies are caused by virus.



  1. Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible for such rejections?









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    Cell mediated immune response causes non-acceptance or rejection of graft or transplanted tissues/organs.

    Correct Option: A

    Cell mediated immune response causes non-acceptance or rejection of graft or transplanted tissues/organs.