RNA STRUCTURE QUIZ

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

1-methyl-adenosine

7-methyl-guanosine

2'-O-methyl-guanosine

1-methyl-guanosine

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 D stem loop

None of these

in the T Loop and D stem and loop

in the anticodon loop and the 3' CCA end

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of following RNA characteristically contains unusual purines and pyrimidmes?

nRNA

rRNA

tRNA

mRNA

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the smallest of the RNAs?

Ribosomal RNAs

All of these

Messenger RNA

Transfer RNAs

TRUE ANSWER : ?
YOUR ANSWER : ?

In RNA, uracil pairs with

adenine

guanine

thymine

cytosine

TRUE ANSWER : ?
YOUR ANSWER : ?

A nicked RNA molecule can be ligated by

all of these

T4 RNA ligase

T4 DNA ligase

DNA polymerase

TRUE ANSWER : ?
YOUR ANSWER : ?

The tertiary structure of yeast tRNA

All of these

resembles the 3-dimensional structure of other tRNAs

is maintained mostly by non-Watson-Crick base pairing

involves extensive base stacking interactions

TRUE ANSWER : ?
YOUR ANSWER : ?

RNA instability in alkaline solutions is due to

uracil

ribose

adenine

single strand nature

TRUE ANSWER : ?
YOUR ANSWER : ?

The genetic material of retroviruses such as HIV is

RNA

all of these

protein

DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

Retroviruses replicate via __________ intermediate

rDNA

RNA

mRNA

DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

↑