21.

Which one of the following sets of items in the options 1 - 4 are correctly categorised with one exception in it?

• Items	Category	Exception
  UAA, UAG, UGA	Stop codons	UAG

• Items	Category	Exception
  Kangaroo, Koala, Wombat	Australian marsupials	Wombat

• Items	Category	Exception
  Plasmodium, Cuscuta, Trypanosoma	Protozoan parasites	Cuscuta

• Items	Category	Exception
  Plasmodium, Cuscuta, Trypanosoma	Protozoan parasites	Cuscuta

Identify the molecules (a) and (b) shown below and select the right option giving their source and use

• Molecule	Source	Use
  Coaine	Erythroxylum coca	Accelerates the transport of dopamine

• Molecule	Source	Use
  Heroin	Cannabis sativa	Depressant and slows down body functions

• Molecule	Source	Use
  Cannabinoid	Atropa belladona	Produces hallucinations

• Molecule	Source	Use
  Cannabinoid	Atropa belladona	Produces hallucinations

Which one of the following statements is correct with respect to immunity?

• Preformed antibodies need to the injected to treat the bite by a viper snake

• The antibodies against small pox pathogen are produced by T-lymphocytes

• Antibodies are protein molecules, each of which has four light chains

• Antibodies are protein molecules, each of which has four light chains

Which of the following viruses is not transferred through semen of an infected male?

• Hepatitis B virus

• Human immunodeficiency virus

• Chikungunya virus

• Chikungunya virus

Match each disease with its correct type of vaccine:

• Code
           A   B  C    D
           2   1   3    4
• Code
           A   B    C    D
           3    2    4    1
• Code
           A   B    C    D
           4    3     2    1
• Code
           A   B    C    D
           4    3     2    1

HIV that causes AIDS, first starts destroying 

• B- Lymphocytes

• Leucocytes

• Helper T- Lymphocytes

• Helper T- Lymphocytes

The active form of Entamoeba histolytica feeds upon

• erythrocytes; mucosa and submucosa of colon

• mucosa and submucosa of colon only

• food in intestine

• food in intestine

A certain patient is suspected to be suffering from Acquired Immuno Deficiency Syndrome. Which diagnostic technique will you recommend for its detection?

• MRI

• Ultra Sound

• WIDAL

• WIDAL

Which one of the following acts as a physiological barrier to the entry of microorganisms in the human body? 

• Tears

• Monocytes

• Skin

• Skin

where will you look for the sporozoites of the malarial parasite?

• Red blood corpuscles of humans suffering from malaria

• Spleen of infected humans

• Salivary glands of freshly moulted female Anopheles mosquito

• Salivary glands of freshly moulted female Anopheles mosquito