pack 10

Question 1

What is the function of exons?

Answer 1

coding section of the RNA transcript

Question 2

What is a monocistronic message? Where is it found?

Answer 2

Found: Eukaryotic mRNA

It is: One mRNA codes for a single gene.

Question 3

What is the shine dalgarno site? What type of DNA and mRNA is it found in? Where is it located? Why can it carry its function?

Answer 3

Found in prokaryotic DNA and mRNA

Located: before the start codon

Main function: For ribosomes to bind and start the translation of the mRNA.

Can carry its function because: There are no introns, no nuclear envelope, so no translocation is needed so it can start translation the minute it is transcribed.

Question 4

What is a polycistronic message? Where is it found?

Answer 4

Found: Prokaryotic mRNA

It is: A single mRNA codes for multiple genes.

Question 5

How many RNA polymerase do prokaryotes have?

Answer 5

1

Question 6

What is the protien that is required to intiate the transcription of Prokaryotic RNA?

Answer 6

Sigma factor

(it’s the sigma bc it starts it)

Question 7

What is the protien that is required to terminate the transcription of Prokaryotic RNA?

Answer 7

Rho factor

(like the ram rho which is the last truck)

Question 8

What does RNA polymerase I do?Where is it found?

Answer 8

Does:produces ribosomal (rRNA)

Found: nucleolus

Question 9

What does RNA polymerase III do?

Answer 9

transcribes DNA to synthesize 5S ribosomal RNA, tRNA