RNA STRUCTURE QUIZ

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

Bacterial alpha-amylase

Bacteriophage DNA ligase

Human insulin

A restriction endonuclease from E. coli

TRUE ANSWER : ?
YOUR ANSWER : ?

Retroviruses replicate via __________ intermediate

RNA

mRNA

rDNA

DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

In RNA, uracil pairs with

adenine

thymine

cytosine

guanine

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1-methyl-guanosine

1-methyl-adenosine

7-methyl-guanosine

2'-O-methyl-guanosine

TRUE ANSWER : ?
YOUR ANSWER : ?

A nicked RNA molecule can be ligated by

all of these

DNA polymerase

T4 RNA ligase

T4 DNA ligase

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the smallest of the RNAs?

All of these

Messenger RNA

Transfer RNAs

Ribosomal RNAs

TRUE ANSWER : ?
YOUR ANSWER : ?

During RNA synthesis, the DNA template sequence 5'Tp Ap Gp Cp 3' Would be transcribed to produce which of the following RNA sequence?

5'-Gp Cp Tp Ap-3'

5'-Gp Cp Up Ap-3'

5'-Ap Up Cp Gp-3'

5'-Ap Tp Cp Gp-3'

TRUE ANSWER : ?
YOUR ANSWER : ?

The genetic material of retroviruses such as HIV is

protein

all of these

RNA

DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

RNA instability in alkaline solutions is due to

single strand nature

uracil

ribose

adenine

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of following RNA characteristically contains unusual purines and pyrimidmes?

rRNA

tRNA

mRNA

nRNA

TRUE ANSWER : ?
YOUR ANSWER : ?

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