RNA STRUCTURE QUIZ

RNA instability in alkaline solutions is due to

adenine

single strand nature

ribose

uracil

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Which of the following is the smallest of the RNAs?

Messenger RNA

Transfer RNAs

Ribosomal RNAs

All of these

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In RNA, uracil pairs with

adenine

guanine

thymine

cytosine

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Which of following RNA characteristically contains unusual purines and pyrimidmes?

tRNA

mRNA

nRNA

rRNA

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The mRNA from which of the following would contain a poly-A tail?

A restriction endonuclease from E. coli

Bacterial alpha-amylase

Bacteriophage DNA ligase

Human insulin

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What is the average size (in bp) of a mature t-RNA?

120 bp

140 bp

100 bp

80 bp

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A nicked RNA molecule can be ligated by

DNA polymerase

T4 DNA ligase

T4 RNA ligase

all of these

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What is the function of messenger RNA?

It carries amino acids

It is a direct copy of a gene

It is the genetic material of some organisms

It is a component of the ribosomes

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Two features of the tRNA molecule associated, in converting the triplet codon to an amino acid, are

None of these

in the T Loop and D stem and loop

in the anticodon loop and D stem loop

in the anticodon loop and the 3' CCA end

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During RNA synthesis, the DNA template sequence 5'Tp Ap Gp Cp 3' Would be transcribed to produce which of the following RNA sequence?

5'-Ap Up Cp Gp-3'

5'-Gp Cp Tp Ap-3'

5'-Gp Cp Up Ap-3'

5'-Ap Tp Cp Gp-3'

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