RNA STRUCTURE QUIZ

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

7-methyl-guanosine

2'-O-methyl-guanosine

1-methyl-guanosine

1-methyl-adenosine

TRUE ANSWER : ?
YOUR ANSWER : ?

Retroviruses replicate via __________ intermediate

RNA

rDNA

mRNA

DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

RNA instability in alkaline solutions is due to

single strand nature

uracil

adenine

ribose

TRUE ANSWER : ?
YOUR ANSWER : ?

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

in the anticodon loop and D stem loop

None of these

in the T Loop and D stem and loop

TRUE ANSWER : ?
YOUR ANSWER : ?

In RNA, uracil pairs with

cytosine

adenine

guanine

thymine

TRUE ANSWER : ?
YOUR ANSWER : ?

The genetic material of retroviruses such as HIV is

DNA

protein

all of these

RNA

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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

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the function of messenger RNA?

It carries amino acids

It is the genetic material of some organisms

It is a component of the ribosomes

It is a direct copy of a gene

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Which of following RNA characteristically contains unusual purines and pyrimidmes?

nRNA

mRNA

rRNA

tRNA

TRUE ANSWER : ?
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A nicked RNA molecule can be ligated by

DNA polymerase

all of these

T4 RNA ligase

T4 DNA ligase

TRUE ANSWER : ?
YOUR ANSWER : ?

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