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251.

Assertion. Physiological damage caused by smoking is not reversed even if smoking is given up. Reason. Passive smoking makes the damage persist.A. If both A and R are true and R is the correct explanation of A.B. If both A and R are true but R is not the correct explanation of A.C. If A is true but R is false.D. If both A and R are false.

Answer» Correct Answer - D
252.

Filariasis is due toA. HelminthB. ProtozoanC. BacteriumD. Virus

Answer» Correct Answer - A
253.

A disease on the verge of extinction in India isA. AIDSB. kala-azarC. PoliomyelitisD. Measles

Answer» Correct Answer - C
254.

Causal organism of dengue isA. ArbovirusB. WuchereriaC. AnophelesD. Culex

Answer» Correct Answer - A
255.

Neoplasms areA. nuclei with massive DNAB. cells without covering membranesC. cells capable of unlimited divisionD. newely produced cells formed through uncontrolled cell prolification.

Answer» Correct Answer - D
256.

A localised tumour covered by connective tissue is calledA. metastasisB. malignant tumourC. benign tumourD. neoplasm

Answer» Correct Answer - C
257.

Give an alternative term for wandering macrophages.

Answer» Correct Answer - Histiocytes.
258.

The vector of Wuchereria isA. AedesB. CulexC. AnophelesD. Pediculus

Answer» Correct Answer - B
259.

Can the skin be grown in a culture?

Answer» Correct Answer - Yes.
260.

A change in a want or mole on the skin is observed inA. AdenomaB. CarcinomaC. LymphomaD. Melanoma

Answer» Correct Answer - D
261.

T.B. is cured byA. GriseofulvinB. UbiquinoneC. StreptomycinD. Eucitol

Answer» Correct Answer - C
262.

Which is not cancerA. LeukemiaB. GlaucomaC. CarcinomaD. Sarcoma

Answer» Correct Answer - B
263.

Plague is caused byA. XanthomonasB. Pasteurella pestisC. vericella virusD. Pseudomonas

Answer» Correct Answer - B
264.

Which of the following is not correctly matched ?A. Dengue fever-ArbovirusB. Plague-Yersinia pestisC. Syphilis-Trichuris trichuraD. Sleeping Sickness-Tryanosoma gambiense

Answer» Correct Answer - C
265.

Which of the following causes plague ?A. Salmonella typhimuriumB. Trichinella spiralisC. Yersinia pestisD. Leishmania donovani

Answer» Correct Answer - C
266.

Blood cancer is called:A. LeukemiaB. ThrombosisC. HaemophiliaD. Hemolysis

Answer» Correct Answer - A
267.

Blood cancer isA. MelanomaB. sarcomaC. CarcinomaD. Leukemia .

Answer» Correct Answer - D
268.

Blood cancer is called:A. thrombosisB. leukaemiaC. haemolysisD. haemophilia

Answer» Correct Answer - B
269.

What percentage of IgE constitutes of all antibodies in the human bloodA. ` gt 0.001%`B. `ge 10%`C. `ge 0.1%`D. `ge 0.5%`

Answer» Correct Answer - A
270.

The function of IgE is:A. activation of B-cellsB. mediate in allergic responseC. present on lymphocytes surface as receptorsD. protection from inhaled and ingested pathogens

Answer» Correct Answer - B
271.

Which of the following is not a cause of transmission of HIV ?A. Multiple sexual partnersB. Sharing infected needlesC. Mosquito biteD. Transfusion of contaminated blood

Answer» Correct Answer - C
272.

HIV is a retrovirus that attacksA. helper T-cellsB. cytotoxin T-cellsC. B-cellsD. neutrophils.

Answer» Correct Answer - A
273.

Which of the following is not immunized by triple antigen?A. TyphoidB. tetanusC. DiphtheriaD. Whooping cough

Answer» Correct Answer - A
274.

Opsonisation is carried out byA. IgMB. IgGC. IgAD. IgD and IgE

Answer» Correct Answer - B
275.

HIV that causes, AIDS first starts destroyingA. helper T-lymphocytesB. B-lymphocytesC. leucocytesD. thrombocytes

Answer» Correct Answer - A
276.

Mumphs disease is caused byA. ProtozoanB. VirusC. BacteriumD. Fungus

Answer» Correct Answer - B
277.

Retroviruses are implicated as a cause for cancer in humans because theyA. carry gene for reverse transcriptaseB. may carry cellular protooncogenes in their genomeC. may carry v-oncogenes in their genomeD. carry single stranded RNA as their genetic material

Answer» Correct Answer - B
Retroviruses are implicated as a cause of cancer in humans because they may carry cellular proto-onchogenes in their genome, when these proto-oncogenes gets converted into oncogenes due to some physical, chemical or biological agents they cause cancer.
278.

Hypersensivity to an allergen is due toA. aberrant functioning of the immune mechanismB. increase in ambient temperatureC. age of the individualD. food habits

Answer» Correct Answer - A
Allergy is hypersensitivity or inappropriate over reaction or aberrant functioning of the immune system.
279.

Breast cancer is an example of:A. A sarcomaB. CarcinomaC. CommunicableD. Contagious

Answer» Correct Answer - B
280.

AIDS isA. ContagiousB. InfectiousC. NoncontagiousD. Both B and C

Answer» Correct Answer - D
281.

Approximate number of AIDS patients worldwide isA. 2 millionB. 30 millionC. 200 millionD. 300 million

Answer» Correct Answer - B
282.

Which of the following properties of acquired immunity is the basis of vaccination?A. SpecificityB. DiversityC. MemoryD. Discrimination between self and non self.

Answer» Correct Answer - c
283.

Number of AIDS patients believed to be present in India is currentlyA. 20000B. 2,00,000C. 20,00,000D. 30,00,000

Answer» Correct Answer - D
284.

HIV attacksA. B-CellsB. T-cellsC. Antigen presenting cellsD. T-helpher cells

Answer» Correct Answer - D
285.

Zoonotc disease transmitted to humans isA. MeaslesB. DiphtheriaC. MeaslesD. Rabies

Answer» Correct Answer - D
286.

Why sharing of injection needles between two individuals is not recommended?

Answer» Sharing of injection needle between two individuals can lead to the transfer of various diseases viz. HIV from infected person to a healthy person.
287.

Interferons are synthesized in response to:A. MycoplasmaB. bacteriaC. virusesD. fungi

Answer» Correct Answer - C
Cells infected by virus produce interferons (an antiviral protein) which is antiviral. It spreads to neighbouring cells and makes them resistant to virus infections by inhibiting viral growth.
288.

Cancerous cells can easily be destroyed by radiation due toA. rapid cell divisionB. lack of nutritionC. fast mutationD. lack of oxygen

Answer» Correct Answer - A
The ability of radiations to kill cells is highest in the tissue with highest number of dividing cells. Tumour cells proliferate rapidly. Hence, tumours are killed more rapidly by radiations.
289.

Which of the following is quartan in periodicity ?A. P. malariaeB. P.vivaxC. P. ovaleD. p.falciparum

Answer» Correct Answer - A
290.

Which of the following diseases can be controlled by antibiotics?A. PolioB. AIDSC. MeaslesD. Trachoma

Answer» Correct Answer - D
291.

Rhabditiform larva of Ascaris undergoes second and third moultings inA. LiverB. HeartC. Alveoli of lungsD. Small intestine

Answer» Correct Answer - C
292.

The T-lymphocytes recognize:A. PolysacchariesB. Nucleic acidC. PeptidesD. Recurring molecular groups

Answer» Correct Answer - D
293.

The segment of antigen that are specifically recognized by individual antibody is known as:A. Memory regionsB. EpitopesC. NondeterminantsD. Self limitation

Answer» Correct Answer - B
294.

Match the columns : A. a-3,b-5,c-4,d-2,e-1B. a-6,b-4,c-3,d-2,e-1C. a-3,b-5,c-4,d-1,e-2D. a-6,b-3,c-4,d-2,e-1

Answer» Correct Answer - A
295.

Reckless behaviour, vandalism violence etc, are adverse effect of :-

Answer» Correct Answer - Drug & alchohal abuse
296.

A person is injected with the globulin against hepatitis. This isA. Artificially acquired active immunityB. Artificially acquired passive immunityC. Naturally acquired active immunityD. Naturally acquired passive immunity

Answer» Correct Answer - B
297.

In which part of the gastrointestinal tract is the alcohol absorbed?

Answer» Mainly in the upper part of small intestine, very slightly in the oral cavity, oesophagus, stomach and large intestine.
298.

Alcohol is absorbed rapidly. Why ?

Answer» Due to low molecular weight and high fat and water solubility.
299.

The cell which continues to produce virus and act like HIV factory is :-

Answer» Correct Answer - Macrophage
300.

Widely used diagnostic test for AIDS is :-

Answer» Correct Answer - ELISA