RNA STRUCTURE QUIZ

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 : ?

What is the function of messenger RNA?

It is a direct copy of a gene

It is the genetic material of some organisms

It carries amino acids

It is a component of the ribosomes

TRUE ANSWER : ?
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The tertiary structure of yeast tRNA

All of these

involves extensive base stacking interactions

resembles the 3-dimensional structure of other tRNAs

is maintained mostly by non-Watson-Crick base pairing

TRUE ANSWER : ?
YOUR ANSWER : ?

The genetic material of retroviruses such as HIV is

RNA

all of these

DNA

protein

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the smallest of the RNAs?

Messenger RNA

All of these

Ribosomal RNAs

Transfer RNAs

TRUE ANSWER : ?
YOUR ANSWER : ?

A nicked RNA molecule can be ligated by

T4 RNA ligase

all of these

DNA polymerase

T4 DNA ligase

TRUE ANSWER : ?
YOUR ANSWER : ?

In RNA, uracil pairs with

cytosine

guanine

thymine

adenine

TRUE ANSWER : ?
YOUR ANSWER : ?

Retroviruses replicate via __________ intermediate

RNA

DNA

rDNA

mRNA

TRUE ANSWER : ?
YOUR ANSWER : ?

The anticodon is a structure on

tRNA.

rRNA.

aribosome.

mRNA.

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1-methyl-guanosine

7-methyl-guanosine

2'-O-methyl-guanosine

1-methyl-adenosine

TRUE ANSWER : ?
YOUR ANSWER : ?

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