Key Areas 1.3 - Transcription Process

Question 1

What is Transcription?

Answer 1

Transcription is the copying of the DNA code for a specific protein into mature mRNA

Question 2

Where does Transcription occur?

Answer 2

In the Nucleus

Question 3

What is the Difference between Introns and Exons?

Answer 3

Introns are non-coding regions of genes

Exons are coding regions of genes

Question 4

Where do you find Introns?

Answer 4

Introns are found between the Exons

Question 5

What is the difference between the Primary and Mature Transcript of RNA?

Answer 5

The Primary Transcript contains Introns and Exons. The Mature Transcript has the Introns removed.

Question 6

Where does the Mature Transcript travel to?

Answer 6

A Ribosome in the Cytoplasm

Question 7

What is the first stage in Transcription?

Answer 7

RNA Polymerase Enzyme moves to the specific section of DNA and unwinds the DNA Double Helix from that point by breaking Hydrogen bonds between bases.

Question 8

What is the second/third stage in Transcription?

Answer 8

RNA Nucleotides pair with complementary DNA base pairs (A-U, G-C) forming mRNA.

RNA Polymerase can only add DNA Nucleotides to the 3’ end of mRNA.

Question 9

What is the fourth/fifth (Last stages) in Transcription?

Answer 9

RNA Polymerase joins the Nucleotides together to form a new Sugar-Phosphate Backbone.

The mRNA becomes separated from the DNA Template and is called the Primary Transcript Of mRNA.