CBSE
Multiple Choice QuestionsWhich 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 |
Match each disease with its correct type of vaccine:
| Column I | Column II |
| A. Tuberculosis | 1. Harmless virus |
| B. Whooping cough | 2. Inactivated toxin |
| C. Diphtheria | 3. Killed bacteria |
| D. Polio | 4. Harmless bacteria |
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
HIV that causes AIDS, first starts destroying
B- Lymphocytes
Leucocytes
Helper T- Lymphocytes
Helper T- Lymphocytes
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 of the following viruses is not transferred through semen of an infected male?
Hepatitis B virus
Human immunodeficiency virus
Chikungunya virus
Chikungunya virus
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
Which one of the following acts as a physiological barrier to the entry of microorganisms in the human body?
Tears
Monocytes
Skin
Skin
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 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
