Humans have acquired an immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it:
1. | is very specific and uses different macrophages |
2. | produces memory cells for mounting a fast secondary response |
3. | has natural killer cells that can phagocytose and destroy microbes |
4. | provides passive immunity |
Coca alkaloid or cocaine is obtained from:
1. | Papaver somniferum | 2. | Atropa belladonna |
3. | Erythroxylum coca | 4. | Datura |
The drug called 'Heroin' is synthesized by:
1. | nitration of morphine | 2. | methylation of morphine |
3. | acetylation of morphine | 4. | glycosylation of morphine |
Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid.
1. Salmonella typhi/Widal test
2. Plasmodium vivax/UTI test
3. Streptococcus pneumoniae/Widal test
4. Salmonella typhi/Anthrone test
Colostrum, the yellowish fluid, secreted by the mother during the initial days of lactation is very essential to impart immunity to newborn infants because it contains:
1. | Immunoglobulin A | 2. | Natural killer cells |
3. | Monocytes | 4. | Macrophages |
Which of the following immune responses is responsible for the rejection of kidney graft?
1. Cell-mediated immune response
2. Auto-immune response
3. Humoral immune response
4. Inflammatory immune response
HIV that causes AIDS first starts destroying:
1. B-lymphocytes
2. leucocytes
3. thrombocytes
4. helper T-lymphocytes
To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes, belong?
1. Cytokine barriers
2. Cellular barriers
3. Physiological barriers
4. Physical barriers
Which one of the following is the correct statement regarding the particular psychotropic drug specified?
1. | Hashish causes alter thought perceptions and hallucinations. |
2. | Opium stimulates the nervous system and causes hallucinations. |
3. | Morphine leads to delusions and disturbed emotions. |
4. | Barbiturates cause relaxation and temporary euphoria. |
The letter T, in T- lymphocyte refers to:
1. thyroid
2. thalamus
3. tonsil
4. thymus