One following happens manifestation stage of the disease1. the immune system of the patient fights and kills organisms2. disease process is haled temporarily or permanently3. toxic substances are released by the organismsdisease organisms select a suitable carrier
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During incubation period, the parasite :1. destroys host tissue2. release of toxic substance3. divide and multiply in their numbers4. block passage in tissues
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A vehicle borne transmitted diseases are1. plague and Malaria2. chicken pox and Tetanus3. mumps and Common cold4. eye infection and Influenza
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Source of infection in disease like tuberculosis, mumps and whopping cough is :1. direct contact2. droplets of saliva3. carrier organism4. a vector
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Reservoir and carrier organisms differ in :1. Possessing disease causing organisms2. carrying living infectious agents3. absence of movement4. ability to direct infect the host
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Beri-beri was caused in Japanese sailors who were eating :1. ground nut2. eggs3. unpolished rice4. polished rice
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Sir H.G. Hopkins discovered a substance required for growth in :1. water2. alcohol3. milk4. vanaspathi
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The story of vitamin dates back to :1. 15th century2. 16th century3. 17th century4. 18th century
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Water soluble vitamins are :1. folic acid, carotene, pyridoxine2. tocoferol, niacin, pantothenic acid3. riboflavin, cyanocobalamine, calciferol4. thiamine, ascorbic acid, biotin