Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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41.

In human the inheritance of sex linkage takes place through :

  • autosomes

  • Y - chromosome

  • X- chromosome

  • both 'b' and 'c'


D.

both 'b' and 'c'

Sex linkage or sex linked inheritance is the transmission of characters and their determining genes alongwith sex determining genes which are found on the sex - chromosomes.

Y- chromosome of male carries a few genes but X- chromosome which is common to male and female and carries a number of genes. Therefore, both X and Y chromosome plays an important role in the inheritance of sex linkage.


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42.

Hybridoma technology is used to :

  • kill the cancer cells

  • formation of somaclonal antibodies

  • formation of somatic hybrids

  • formation of antibiotics


43.

Yeast is used in the production of :

  • acetic acid

  • citric acid

  • ethyl alcohol

  • curd


44.

The vaccine of Hepatitis-B is a :

  • first generation vaccine

  • interferon

  • second generation vaccine

  • third generation vaccine


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45.

The term 'ecosystem' was coined by :

  • E.P. Odum

  • A.G. Tansley

  • Carl Mobious

  • W. Clementus


46.

Streptomycin was isolated first time by :

  • A. Flemming

  • Robert Koch

  • N. Borlaug

  • S. Waksman


47.

Which of the following micro-organism is used for conversion of milk into curd?

  • Xanthomonas citri

  • Bacillus megatherium

  • Acetobacter aceti

  • None of the above


48.

Kohler and Milstein developed biotechnology for :

  • monoclonal antibodies

  • steroid synthesis

  • immobilization of enzymes

  • myeloma


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49.

Which of the following is formed by the reactions of UV-rays of sunlight?

  • SO2

  • CO

  • Ozone

  • Florides


50.

In India highest amount of coal is present in :

  • West Bengal

  • Maharastra

  • Jharkhand

  • Assam


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