RNA STRUCTURE QUIZ

In RNA, uracil pairs with

guanine

thymine

cytosine

adenine

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

in the anticodon loop and D stem loop

in the T Loop and D stem and loop

in the anticodon loop and the 3' CCA end

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1-methyl-adenosine

1-methyl-guanosine

2'-O-methyl-guanosine

7-methyl-guanosine

TRUE ANSWER : ?
YOUR ANSWER : ?

RNA instability in alkaline solutions is due to

adenine

ribose

single strand nature

uracil

TRUE ANSWER : ?
YOUR ANSWER : ?

The tertiary structure of yeast tRNA

resembles the 3-dimensional structure of other tRNAs

All of these

is maintained mostly by non-Watson-Crick base pairing

involves extensive base stacking interactions

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YOUR ANSWER : ?

A nicked RNA molecule can be ligated by

T4 DNA ligase

T4 RNA ligase

DNA polymerase

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Bacteriophage DNA ligase

Bacterial alpha-amylase

A restriction endonuclease from E. coli

Human insulin

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YOUR ANSWER : ?

The genetic material of retroviruses such as HIV is

DNA

RNA

protein

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of following RNA characteristically contains unusual purines and pyrimidmes?

nRNA

tRNA

rRNA

mRNA

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the smallest of the RNAs?

Messenger RNA

Transfer RNAs

All of these

Ribosomal RNAs

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YOUR ANSWER : ?

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