Coca alkaloid or cocaine is obtained from:

1.	Papaver somniferum	2.	Atropa belladonna
3.	Erythroxylum coca	4.	Datura

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:

Consider the following statements regarding bird flu:
I. Viruses causing bird flu belong to Influenza virus A strain
II. The most pathogenic strain of this virus causing bird flu is H1N1
III. Culling and vaccinating livestock is a short term strategy to prevent flu pandemic.
IV. A human vaccine is available to control the spread of disease in human populations.

Of the above statements, the correct are:

1. I and III only
2. II and IV only
3. I, III and IV only
4. I, II, III and IV

Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature and is correctly described?
1. Musca domestica - The common house lizard, a reptile
2. Plasmodium falciparum - A protozoan pathogen causing the most serious type of malaria
3. Felis tigris - The Indian tiger, well protected in Gir forests.
4. E.coli - Full name Escherichia coli, a commonly occurring bacterium in human intestine

Acid in stomach, saliva in the mouth, tears from eyes, all prevent microbial growth belong to which of the following barriers?

1. Physical barrier

2. Physiological barrier

3. Cellular barrier

4. Cytokine barrier

A person who met with a road accident is likely to develop tetanus, can be immunised by administering

1. Weakened germs

2. Dead germs

3. Preformed antibodies

4. Wide spectrum antibiotics

A person suffering from a disease caused by Plasmodium, experiences chill and fever at the time when?

1. The sporozites released from RBCs are being rapidly killed and broken down inside spleen

2. The trophozites reach maximum growth and give out certain toxins

3. The parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs

4. The microgametocytes and megagametocytes are being destroyed by the WBCs

The drug called 'Heroin' is synthesized by:

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: