Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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41.

Which of the following is the Pribnow box?

  • 5′-TATAAT-3′

  • 5′-TAATAT-3′

  • 5′-AATAAT-3

  • 5′-ATATTA-3′


A.

5′-TATAAT-3′

The promoters are bacterial and viral genes usually contains a consensus sequence of 5'- TATAA-3' forming RNA polymerase binding site or the Pribnow box, after its discoverer. Pribnow box lies within the promoter about 10 base pairs before the starting point of transcription.


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42.

The genome of Caenorhabditis elegans consists of

  • 3 billion base pairs and 30,000 genes

  • 12 million base pairs and 6000 genes

  • 4.7 million base pairs and 4000 genes

  • 97 million base pairs and 18,000 genes


43.

About how long ago was the earth formed

  • 3 billion years ago

  • 10 billion years ago

  • 4.6 billion years ago

  • 20 billion years ago


44.

Gas gangrene is caused by

  • Clostridium botulinum

  • Xanthomonas campestris

  • Pseudomonas

  • Clostridium perfringens


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45.

Who received Nobel Prize in 1951 for the development of a vaccine for yellow fever?

  • Max Theiler

  • Ronald Ross

  • Max Delbruck

  • Francis Peyton Rous


46.

Continuous exposer to vinyl chloride may cause cancer of the

  • Liver

  • spleen

  • vagina

  • Prostate gland


47.

Which of the following T-cells and destroyed by HIV?

  • Cytotoxic T-cells

  • Killer T-cells

  • Suppressor T-cells

  • Helper T-cells


48.

An autoimmune disease is

  • AIDS

  • haemophilia

  • Allergy

  • Myasthenia Gravis


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49.

The plant whose seeds are known to leave the longest viability period is

  • Carica papaya

  • Triticum aestivum

  • Zizypus mauritiana

  • Nelumbo nucifera


50.

Jut is a

  • bast fibre from secondary xylem

  • bast fibre from primary xylem

  • bast fibre from secondary phloem

  • bast fibre from primary phloem


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