Q1. Uracil and ribose form
Uridine
Cytidine
Guanosine
Adenosine
Q2. The most abundant free nucleotide in mammalian cells is
FAD
ATP
NAD
GTP
Q3. The mean intracellular concentration of ATP in mammalian cell is about
1 mM
2 mM
0.1 mM
0.2 mM
Q4. The nucleic acid base found in mRNA but not in DNA is
Adenine
Cytosine
Guanine
Uracil
Q5. In RNA moleule ‘Caps’
Allow tRNA to be processed
Are unique to eukaryotic mRNA
Occur at the 3’ end of tRNA
Allow correct translation of prokaryotic mRNA
Q6. In contrast to eukaryotic mRNA, prokaryotic mRNA
Can be polycistronic
Is synthesized with introns
Can only be monocistronic
Has a poly A tail
Q7. The size of small stable RNA ranges from
0–40 nucleotides
40–80 nucleotides
90–300 nucleotides
More than 320 nucleotides
Q8. The number of small stable RNAs per cell ranges from
10–50,000
50,000–1,00,000
1,00,000–10,00,000
More than 10 lakhs
Q9. 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
Single strand molecule
Double stranded molecule
Double stranded helical molecule
Polymer of purine and pyrimidine ribonucleotides
Q10. The nitrogenous base present in the RNA molecule is
Thymine
Uracil
Xanthine
Hypoxanthine