Mod6 - Structure and Function of RNA

Question 1

Why is RNA less stable than DNA?

Answer 1

Because it has a 2’-OH group

Question 2

Which type of RNA is responsible for processing of mRNA?

Answer 2

snRNA (it forms the snRNPs together with proteins)

Question 3

Which type of RNA is responsible for processing of rRNA?

Answer 3

snoRNA

Question 4

If a polypeptide is coded for by an mRNA that seems to be longer than necessary (e.g. 1050 bases for 150 amino acids), what is the most likely explanation?

Answer 4

Some of the mRNA lies outside (i.e., not between) the initiation and termination codons

Question 5

What are the examples of the Wobble phenomenon discussed in the lecture?

Answer 5

G-U base pairing, and C/A/U pairing with I (inosine) - [only at the third base of the codon/first base of the anticodon]