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Nucleic Acids – Multiple Choice Questions (Set 2)

December 8, 2018December 21, 20220978

Q.) The number of small stable RNAs per cell ranges from

1,00,000–10,00,000

10–50,000

More than 10 lakhs

50,000–1,00,000

Q.) The most abundant free nucleotide in mammalian cells is

FAD

ATP

NAD

GTP

Q.) The nucleic acid base found in mRNA but not in DNA is

Guanine

Uracil

Adenine

Cytosine

Q.) The nitrogenous base present in the RNA molecule is

Xanthine

Thymine

Uracil

Hypoxanthine

Q.) Uracil and ribose form

Cytidine

Guanosine

Uridine

Adenosine

Q.) The mean intracellular concentration of ATP in mammalian cell is about

1 mM

0.2 mM

0.1 mM

2 mM

Q.) In contrast to eukaryotic mRNA, prokaryotic mRNA

Has a poly A tail

Is synthesized with introns

Can only be monocistronic

Can be polycistronic

Q.) The size of small stable RNA ranges from

90–300 nucleotides

0–40 nucleotides

More than 320 nucleotides

40–80 nucleotides

Q.) In RNA molecule guanine content does not necessarily equal its cytosine content nor does its adenine content necessarily equal its uracil content since it is a

Double stranded helical molecule

Double stranded molecule

Polymer of purine and pyrimidine ribonucleotides

Single strand molecule

Q.) In RNA moleule ‘Caps’

Occur at the 3’ end of tRNA

Are unique to eukaryotic mRNA

Allow correct translation of prokaryotic mRNA

Allow tRNA to be processed

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