Question

1) At replication fork, the DNA segment is kept as single strand DNA mainly due to

A) DAN Gyrase

B) Single-strand binding proteins

C) Helicase

2) The major reason that causes basal transcription is:

A) there are transcription inhibitors

B) only core promoter is involved in the transcription

C) at the beginning of transcription

3. In bacteria, the RNA transcripts are made starting at:

A) -35 site

B) 0 site

C) +1 site

4. Which of the following regions/sites of a structural gene is presented in the DNA sequence but not the RNA transcript?

A)  transcriptional start site

B) exon

C) promoter

5. An active clamp protein has _____ subunits.

A) 6

B) 3

C) 1

D) 2

Answer 1

1) Option B is the right answer as Single strand binding protein binds with a newly separated DNA strand and keeps it as a single strand so that it can be used as a template.

2) Option B is the right answer

3) Option C is the right answer as in the bacteria+1 is the start site from where the transcript is started.

4) Option C is the right answer as promoter is not present in the transcript while it is present in the DNA.

5) Option A is the right answer