3. Gene Expression Flashcards
Transcription, translation and protein synthesis
1
Q
What is a gene?
A
Short segment of DNA coding for 1 protein
2
Q
Which enzyme carries out transcription?
A
RNA polymerase
3
Q
DNA is transcribed into which type of molecule?
A
mRNA
4
Q
Where does transcription take place?
A
Nucleus
5
Q
What is an intron
A
Non-coding region of DNA removed during splicing
6
Q
What is an exon?
A
A coding region of DNA that remains in the mature transcript
7
Q
Where does translation take place?
A
Ribosome
8
Q
Which molecule adds amino acids to the growing peptide chain?
A
tRNA
9
Q
Which base pairs with A in the RNA molecule?
A
U (uracil)
10
Q
What are the 3 main ways RNA differs to DNA
A
Single stranded, ribose sugar, U instead of T
