transcription

Question 1

outline DNA transcription

Answer 1

1) RNA polymerase unzip and unwinds DNA
2) RNA polymerase moves along the template strand in 3’ to 5’ direction
3) free RNA nucleotides complementary to the DNA pair up and form phosphodiester bonds to form mRNA strand
4) mRNA will have same sequence as the coding strand

Question 2

what is the difference in complementary pairs

Answer 2

still C to G
but A to U not T

Question 3

describe the genetic code

Answer 3

• composed of triplet codes called codons
  64 different codons
• genetic code is a degenerate meaning more than one codon can code for the same amino acid
• genetic code is universal

Question 4

difference in DNA and RNA

Answer 4

dexoyribose vs ribose

AT vs AU

double helix vs single strand