Protein Synthesis

Question 1

Making a copy of the gene. The copy is a strand of mRNA

Answer 1

Transcription

Question 2

In initiation in prokaryotes, what does the sigma and RNA polymerase form when they are binded?

Answer 2

Holoenzyme

Question 3

Sigma binds to a specific region of DNA the regulate the expression of groups of genes

Answer 3

Promoter region

Question 4

RNA polymerase binds to the template strand to open a (transcription bubble) and begins to read the bases ( coding strand is not read)

Answer 4

Helix

Question 5

The template strand is read in what direction?

Answer 5

‘3-5’ direction.

Question 6

What direction do you write the complementary strand of mRNA transcript?

Answer 6

5’ to 3’ direction ( same as the coding strand with exception of U and T)

Question 7

In elongation in prokaryotes, what enter the holoenzyme that it then are linked together to form the growing strand of mRNA.

Answer 7

Ribonucleoside triphosphate (NTPs)

Question 8

In termination in prokayotes, when does transcription ends? (a sequence of complementary nucleotides).

Answer 8

When a hair pin loop forms

Question 9

What happens when the hair loop forms?

Answer 9

It interferes with the interaction between RNA polymerase and the strand of mRNA. It displaces it and transcription ends.