transcription

Question 1

step 1

Answer 1

dna helix unwinds exposing template strand to be used to make rna

Question 2

step 2

Answer 2

rna binds to promoter to start transcirption rna ploymerase reads template strand in dna to make complemenatary rna strands , mrna

Question 3

step 3

Answer 3

Splicing: Introns (non-coding regions) are removed, and exons (coding regions) are spliced together.

Methyl Cap: A methyl cap is added to the 5’ end of the mRNA to protect it and help with ribosome recognition.

Poly-A Tail: A poly-A tail (a string of adenine nucleotides) is added to the 3’ end to protect the mRNA and help with stability and export from the nucleus.

Question 4

step 4

Answer 4

mrna leaves the nucleus , mrna is processed and exported into the cytoplasm