RNA STRUCTURE QUIZ

RNA instability in alkaline solutions is due to

adenine

ribose

uracil

single strand nature

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The tertiary structure of yeast tRNA

is maintained mostly by non-Watson-Crick base pairing

resembles the 3-dimensional structure of other tRNAs

All of these

involves extensive base stacking interactions

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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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What is the function of messenger RNA?

It carries amino acids

It is a direct copy of a gene

It is a component of the ribosomes

It is the genetic material of some organisms

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The genetic material of retroviruses such as HIV is

RNA

all of these

DNA

protein

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In RNA, uracil pairs with

adenine

guanine

cytosine

thymine

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The anticodon is a structure on

aribosome.

rRNA.

mRNA.

tRNA.

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Which of following RNA characteristically contains unusual purines and pyrimidmes?

mRNA

nRNA

tRNA

rRNA

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

1-methyl-adenosine

1-methyl-guanosine

7-methyl-guanosine

2'-O-methyl-guanosine

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A nicked RNA molecule can be ligated by

T4 RNA ligase

DNA polymerase

all of these

T4 DNA ligase

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