transcription

Question 1

what is the name of the first stage of protein synthesis

Answer 1

transcription

Question 2

stage 1 of transcription

Answer 2

RNA polymerase attaches to the DNA double helix
DNA molecules unwinds due to the hydrogen bond between the DNA strand is broken
One of the strand is used as a template strand

Question 3

stage 2 of transcription

Answer 3

RNA polmerase lines up free RNA neucleotides alondside the template strand.
complemenatry base pairs
They are then joined by RNA polymerase forming an mRNA molecule

Question 4

stage 3 of transcription

Answer 4

RNA polymerase move along the DNA, seperating the strand assembling the mRNA strand.
the hydrogen bonds between the unwound strands of DNA are then reformed once RNA polymerase has paased and the strnads wind back up into a double helix

Question 5

last step of transcription

Answer 5

RNA polymerase reaches a stop codon, it stops making mRNA and detaches from the DNA
mRNA moves out of the nucleus via nuclear pore

Question 6

what attches the DNA double helix at the begining ( start codon)

Answer 6

RNA polymerase

Question 7

what is lined up along the template strand

Answer 7

free RNA mononucleotides

Question 8

what happens when RNA polymerase reaches stop codon

Answer 8

mRNA detaches from DNA and moves out of the nucleus via nuclear pore

Question 9

what detaches from the DNA

Answer 9

mRNA

Question 10

what is replaced by thymine

Answer 10

Uracil

Question 11

when does the unwound strand of DNA reform again

Answer 11

after RNA polymerase
has passed by and the DNA strands wind back into a double helix