RNA STRUCTURE QUIZ

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'-Gp Cp Tp Ap-3'

5'-Ap Tp Cp Gp-3'

5'-Ap Up Cp Gp-3'

5'-Gp Cp Up Ap-3'

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In RNA, uracil pairs with

guanine

thymine

cytosine

adenine

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Which of the following is the smallest of the RNAs?

Ribosomal RNAs

Messenger RNA

Transfer RNAs

All of these

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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

Human insulin

Bacteriophage DNA ligase

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Retroviruses replicate via __________ intermediate

DNA

mRNA

rDNA

RNA

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What modified base is at the 5' extremity of a capped eukaryotic m-RNA?

2'-O-methyl-guanosine

7-methyl-guanosine

1-methyl-adenosine

1-methyl-guanosine

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The genetic material of retroviruses such as HIV is

all of these

protein

DNA

RNA

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

120 bp

140 bp

80 bp

100 bp

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

in the anticodon loop and the 3' CCA end

None of these

in the anticodon loop and D stem loop

in the T Loop and D stem and loop

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What is the function of messenger RNA?

It is a direct copy of a gene

It is the genetic material of some organisms

It is a component of the ribosomes

It carries amino acids

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