Unit 2-RNA Polymerases

Question 1

What kind of RNA is transcribed by RNA polymerase I?

Answer 1

pre rRNA (28s, 18s, 5.8s)

Question 2

What kind of RNA is transcribed by RNA polymerase II?

Answer 2

-mRNA
-snRNA
-miRNA

Question 3

What kind of RNA is transcribed by RNA polymerase III?

Answer 3

-tRNA
-5S rRNA
-snRNA U6
-7S RNA
-other stable short RNAs

Question 4

What is the RNA function of the RNA transcribed by RNA pol I (28s, 18s, 5.8s)?

Answer 4

Ribosome components, protein synthesis

Question 5

What is the RNA function of the RNA transcribed by RNA pol II? (mRNA, snRNA, miRNA)?

Answer 5

-mRNA: encodes protein
-snRNA: RNA splicing
-miRNA: post transcriptional gene control

Question 6

What is the RNA function of the RNA transcribed by RNA pol III

Answer 6

-tRNA: protein synthesis
-5s rRNA: Ribsosome component, protein synthesis
-snRNA U6: signal recognition particle for insertion of polypeptides into the endoplasmic reticulum