RNA STRUCTURE QUIZ

Which of the following is the smallest of the RNAs?

Messenger RNA

All of these

Transfer RNAs

Ribosomal RNAs

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Which of following RNA characteristically contains unusual purines and pyrimidmes?

nRNA

mRNA

tRNA

rRNA

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What is the function of messenger RNA?

It is the genetic material of some organisms

It is a component of the ribosomes

It carries amino acids

It is a direct copy of a gene

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

1-methyl-guanosine

7-methyl-guanosine

2'-O-methyl-guanosine

1-methyl-adenosine

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In RNA, uracil pairs with

adenine

thymine

guanine

cytosine

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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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Retroviruses replicate via __________ intermediate

rDNA

mRNA

RNA

DNA

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RNA instability in alkaline solutions is due to

single strand nature

adenine

uracil

ribose

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The genetic material of retroviruses such as HIV is

RNA

protein

all of these

DNA

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The tertiary structure of yeast tRNA

resembles the 3-dimensional structure of other tRNAs

is maintained mostly by non-Watson-Crick base pairing

All of these

involves extensive base stacking interactions

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