Exam 3 Examples + extras

Question 1

transcription vs translation

Answer 1

diff: length of template
- replication: all nucleotides in template copied
- transcription: small
parts (single gene or, at
most, a few genes)

Question 2

writing RNA sequence out

Answer 2

• 1st nucleotide
  transcribed is numbered +1
• nucleotides downstream are assigned positive numbers
• nucleotides upstream
  assigned negative numbers

Question 3

steps of bacteria initiation

Answer 3

(1) promoter recognition
(2) formation of the transcription bubble
(3) creation of the first
bonds between rNTPs,
(4) escape of the transcription
apparatus from the promoter.

Question 4

polycistronic RNA

Answer 4

when a single terminator is present at the end of a
group of several genes that are transcribed together

Question 5

basal transcription apparatus

Answer 5

a group of proteins
that assemble near the start site and initiate min transcription

Question 6

transcriptional activator proteins

Answer 6

bind to specific DNA sequences and heighten transcription by stimulating the assembly of
the basal transcription apparatus at the start site