protein synthesis Flashcards
1
Q
what is the first stage of protein synthesis
A
transcription
2
Q
where does transcription occur
A
nucleus
3
Q
what is the purpose of transcription
A
mRNA copy of a gene is made
4
Q
how does transcription start
A
RNA polymerase attaches to a DNA double helix at the beginning of a gene
5
Q
what happens when RNA polymerase attaches to DNA
A
hydrogen bonds between DNA strands break, uncoiling the DNA molecule
6
Q
what happens when the strands of DNA separate
A
one is used as a template for an mRNA copy
7
Q
how does the template strand make an mRNA copy
A
RNA polymerase lines up free RNA nucleotides along the template strands, complementary base pairing means mRNA is a complementary copy of the DNA
8
Q
what happens after complementary base pairing of RNA bases
A
join together forming mRNA
9
Q
A
