The binding of lac repressor to DNA could be considered to be analogous to uncompetitive inhibition of an enzyme competitive inhibition of an enzyme mixed-type inhibition of an enzyme allosteric effects in enzyme regulation TRUE ANSWER : ? YOUR ANSWER : ?
Enhancers are regions that bind RNA polymerase are CAT box binding proteins modulate transcription are adjacent to the TATA box TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following conditions would cause the release of the lac repressor protein from the lac operator site on DNA? Presence of glucose in the growth media Presence of IPTG (isopropyl thiogalactoside) in the growth media Both (b) and (c) Presence of lactose in the growth media TRUE ANSWER : ? YOUR ANSWER : ?
The function of the sigma factor of RNA polymerase is to assure that translation ends at the proper point assure that translation begins at the proper point assure that transcription begins at the proper point assure that transcription ends at the proper point TRUE ANSWER : ? YOUR ANSWER : ?
What is a promoter? A specific sequence of DNA to which RNA polymerase binds None of these A specific sequence of DNA to which a catabolic repressor binds A specific DNA sequence to which a restriction endonuclease binds TRUE ANSWER : ? YOUR ANSWER : ?
The major function of RNA polymerase's sigma factor is recognition of the transcriptional start sequence recognition of the transcriptional stop sequence recognition of the translational stop sequence recognition of the translational start sequence TRUE ANSWER : ? YOUR ANSWER : ?
Each tRNA molecule has a cloverleaf secondary structure consisting of three stem loops either (a) or (b) four stem loops two stem loops TRUE ANSWER : ? YOUR ANSWER : ?
In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as Shine Dalgarno region CATT TATA box SV40 region TRUE ANSWER : ? YOUR ANSWER : ?
Multiple copies of 5S genes, located at a chromosomal site distinct from the other rRNA genes are transcribed by DNA polymerase I are transcribed by rRNA polymerase III and the 5S rRNA are transcribed by rRNA polymerase II are transcribed by rRNA polymerase I and the 5S rRNA TRUE ANSWER : ? YOUR ANSWER : ?
The complex of RNA polymerase, DNA template and new RNA transcript is called transcription bubble a translation bubble none of these replication bubble TRUE ANSWER : ? YOUR ANSWER : ?