RNA STRUCTURE QUIZ

Which of following RNA characteristically contains unusual purines and pyrimidmes?

mRNA

tRNA

nRNA

rRNA

TRUE ANSWER : ?
YOUR ANSWER : ?

In RNA, uracil pairs with

thymine

adenine

cytosine

guanine

TRUE ANSWER : ?
YOUR ANSWER : ?

The tertiary structure of yeast tRNA

All of these

involves extensive base stacking interactions

is maintained mostly by non-Watson-Crick base pairing

resembles the 3-dimensional structure of other tRNAs

TRUE ANSWER : ?
YOUR ANSWER : ?

Retroviruses replicate via __________ intermediate

rDNA

RNA

DNA

mRNA

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'-Ap Up Cp Gp-3'

5'-Gp Cp Tp Ap-3'

5'-Ap Tp Cp Gp-3'

5'-Gp Cp Up Ap-3'

TRUE ANSWER : ?
YOUR ANSWER : ?

RNA instability in alkaline solutions is due to

adenine

single strand nature

uracil

ribose

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 : ?

A nicked RNA molecule can be ligated by

T4 DNA ligase

DNA polymerase

T4 RNA ligase

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Bacteriophage DNA ligase

Human insulin

A restriction endonuclease from E. coli

Bacterial alpha-amylase

TRUE ANSWER : ?
YOUR ANSWER : ?

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