Transcription occurs in the of a cell. it starts with (a) racing along ( strands looking for factors that have bound to the (b) at the promoter (another word for the promoter is the ( box). the (a) attaches to the (b) at the (d) box, which is (#) base pairs upstream from the start of the ( all (e) start with the sequence in their strand. the (a) pulls the two strands apart, counts to #), and then uses the strand as a template to make a copy of the strand (this new strand is called ( the only difference between the (f) strand and the strand of (b) is that the (f) replaces with the (f) is further processed by adding a 5’ (made of a nucleotide hooked on backwards) and a 3’ tail (made of about 200 nucleotides) to protect the (f) from once the (f) is processed, it moves into the where translation occurs.