51. The nucleotide sequence that tells RNA polymerase where to start synthesizing RNA is called (a) a 5' cap. (b) a promoter, (c) a an origin of replication, (d) a transcription factor, (e) a stop codon.
52. The sequence at the beginning of a new mRNA is called (a) a 5' cap. (b) a promoter, (c) a an origin of replication, (d) a transcription factor, (e) a stop codon.
53. The enzyme responsible for transcription is called (a) DNA polymerase, (b) RNA polymerase, (c) gyrase, (d) helicase, (e) acyl transferase.
54. The sequences that are removed from primary mRNA to form mature mRNA are called (a) introns, (b) exons, (c) promoters, (d) 5' caps, (e) stop codons.