71.
Recently scientists discovered protein which is responsible for Hazardous Neural Disease Alzheimer in which of the following is protein?

72.
Match column I with column II and select the correct answer:
column I column II
a. Amoebiasis 1. Treponema pallidum
b. Diphtheria 2. Houseflies as mechanical carriers
c. Cholera 3. DPT vaccine
d. Syphilis 4. Oral rehydration therapy

73.
Mosquito
1. Culex cause filaria.
2. Aedes causes dengue, chikungunya and yellow fever.
3. Anopheles cause malaria.
Which of the statements given above is/are correct about mosquito?

77.
Cancer is more common in older people because

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