8.3

Question 1

Transcription

Answer 1

Making RNA from DNA code

Question 2

Central dogma

Answer 2

Where transcription begins with DNA then self replicates

Question 3

Base pairing rules for RNA

Answer 3

A = U
C = G

Question 4

Differences and similarities between DNA and RNA

Answer 4

DNA = Deoxyribose N base, double helix, storehouse
Similar = Phosphate, N base, Sugar, helix, Backbone
RNA = Ribose N base, Uracil, single strand, creates proteins

Question 5

Enhancer

Answer 5

Additional binding sit for transcription factors

Question 6

Promoter

Answer 6

start site of transcription

Question 7

Exons

Answer 7

sequence present in the mRNA

Question 8

Introns

Answer 8

Will be spliced out and removed

Question 9

Initiation

Answer 9

TATA box is copied, RNA pol take the TF info, Unwinds DNA

Question 10

Elongation

Answer 10

Continues to transcribe, adds protective 5’ caps, RNA pol. is removed, introns get spliced out

Question 11

Termination

Answer 11

Poly A site terminates the sequence, Poly A tail is added to end of RNA molecule, longer tail, more mRNA in cytoplasm = more protein made

Question 12

Explain what happens during the splicing process

Answer 12

During the splicing process the introns are edited out of the DNA strand.

Question 13

Explain what happens during alternative splicing

Answer 13

The introns are still spliced out but you get a combination of exons as a result.