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 Multiple Choice QuestionsMultiple Choice Questions

231.

Enzyme required for transcription is

  • RNAse

  • Endonuclease

  • RNA polymerase

  • DNA polymerase


232.

The process of multiplication of DNA from DNA is known as

  • replication

  • transversion

  • transcription

  • translation


233.

A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis?

  • Introns

  • Exons

  • Both 'a' and 'b'

  • None of the above


234.

The number of hydrogen bonds between adenine and thymine in a DNA molecule is :

  • two

  • three

  • four

  • eight


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235.

Sequence of DNA (Non- coding) is known as:

  • exon

  • intron

  • cistron

  • none


B.

intron

Intrans are DNA sequence lying within a coding sequence, i.e. Exons but not usually encoding cell product and resulting so called split genes cistron is a segment of linear DNA encoding a specific and functional product, usually protein.


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236.

In DNA, which is absent :

  • Adenine

  • Thymine

  • Guanine

  • Uracil


237.

Which is called soluble RNA ?

  • rRNA

  • tRNA

  • mRNA

  • hnRNA


238.

Mutation is more common when it is present in:

  • dominant condition

  • recessive condition

  • constant in population

  • none of the above


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239.

In DNA, which is absent ?

  • Adenine

  • Guanine

  • Uracil

  • Cytosine


240.

Which of the following constitute about 10-20% of total circular RNA?

  • m-RNA

  • r -RNA

  • t-RNA

  • hn -RNA


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