Antibodies present in colostrum protects the newborn from certain diseases which are of:
1. | Ig G type | 2. | Ig A type |
3. | Ig D type | 4. | Ig E type |
Tobacco consumption is known to stimulate the secretion of adrenaline and nor-adrenaline. The component causing this could be:
1. | Nicotine | 2. | Tannic acid |
3. | Curamin | 4. | Catechin |
Identify the correct statement regarding typhoid fever in human beings:
1. | It is caused by a pathogenic protozoan Salmonella typhi |
2. | The pathogen remains confined to the small intestine |
3. | Widal test can confirm the infection very early in the disease |
4. | Intestinal perforation and death may occur in severe cases |
Rhinovirus does not affect:
1. | Lungs | 2. | Nose |
3. | Pharynx | 4. | Larynx |
The mechanical carrier of the causative agent of amoebic dysentery is:
1. | A protozoan | 2. | House fly |
3. | Mosquito | 4. | Rodent |
Aedes aegypti is not a vector for:
1. | Dengue | 2. | Chikungunya |
3. | Japanese encephalitis | 4. | Yellow fever |
Which of the following is also sometimes called as mosquito fish?
1. | Bombay duck | 2. | Gambusia |
3. | Pacific salmon | 4. | Pomfret |
What is incorrect regarding innate immunity?
1. | It is present at the time of birth |
2. | Physiological barriers prevent microbial growth |
3. | Natural killers, a cellular barrier, are a type of monocyte |
4. | It is a non-specific type of defense |
B cells:
1. | Do not produce antibodies but help T cells produce them |
2. | Are pathogen specific but do not retain the memory of previous encounters |
3. | Lack ability to distinguish between self and non-self |
4. | Are involved in humoral immune response |
In an antibody molecule, an antigen binding site is located:
1. In the constant portion
2. At the C – terminus of a heavy chain
3. Between a light and a heavy chain
4. Between two heavy chains