Multiple Choice Questions

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Common cold differs from pneumonia in that

  • pneumonia is a communicable disease whereas the common cold is a nutritional deficiency disease

  • Pneumonia can be prevented by a live attenuated bacterial vaccine whereas the common cold has no effective vaccine

  • Pneumonia is caused by a virus while the common cold is caused by the bacterium haemophilus influenzae

  • Pneumonia is caused by a virus while the common cold is caused by the bacterium haemophilus influenzae


B.

Pneumonia can be prevented by a live attenuated bacterial vaccine whereas the common cold has no effective vaccine

Pneumonia is a caused by the bacteria Diplococcus pneumoniae which infects the alveoli of lungs. It generally spreads through the sputum of patient. Fever, cold and difficulty in breathing are some common symptoms of pneumonia. 
Common cold is caused by a variety of viruses, most commonly by rhinovirus (RNA virus), It spreads through droplet infection. It affects the upper respiratory tract but not the lungs. Nasal and bronchial irritation, sneezing and coughing are some common symptoms of cold.

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Removal of RNA polymerase -III from nucleoplasm will affect the synthesis of

  • tRNA

  • rRNA

  • mRNA

  • mRNA

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Which part would be most suitable for raising virus-free plants for micropropagation?

  • Bark

  • Vascular tissue

  • Meristem

  • Meristem

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Widal test is carried out to test

  • malaria

  • diabetes mellitus

  • HIV/AIDS

  • HIV/AIDS

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Which one of the following is a wrong statement

  • Most of the forests have been lost in tropical areas

  • Ozone in upper part of atmosphere is harmful to animals

  • Greenhouse effect is a natural Phenomenon

  • Greenhouse effect is a natural Phenomenon

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In an area where DDT had been used extensively, the population of birds declined significantly because

  • birds stopped laying eggs

  • earthworms in the area got eradicated

  • cobras were feeding exclusively on birds

  • cobras were feeding exclusively on birds

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The figure below is the diagrammatic representation o the E.Coli vector pBR 322. Which one of the given options correctly identifies its certain components(s)?

  • Ori- original restriction enzyme

  • rop-reduced osmotic pressure

  • Hind III, Eco RI-selectable markers

  • Hind III, Eco RI-selectable markers

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The common bottle cork is a product of

  • dermatogen

  • Phellogen

  • Xylem

  • Xylem

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What is the figure given below showing in particular?

  • Ovarian cancer

  • Uterine cancer

  • Tubectomy

  • Tubectomy

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Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as

  • Adaptive radiation

  • Natural selection

  • Migration

  • Migration

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