Home⇒ Medical Science⇒ Biochemistry⇒ Transcription and regulation
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Transcription by E. coli polymerase occurs in three phases known as initiation, elongation and termination [other wrong options] [Discuss in forum] |
| Q2 ⇒ Transcription factors are proteins which bind to DNA and regulate transcription [other wrong options] [Discuss in forum] |
| Q3 ⇒ Transcription begins upstream from the start codon [other wrong options] [Discuss in forum] |
| Q4 ⇒ The regions of a gene located at -10 and -35, with respect to the start of transcription, are termed promoters. [other wrong options] [Discuss in forum] |
| Q5 ⇒ The binding of lac repressor to DNA could be considered to be analogous to competitive inhibition of an enzyme [other wrong options] [Discuss in forum] |
| Q6 ⇒ Which of the following is necessary for transcription to occur? Both DNA & RNA polymerase [other wrong options] [Discuss in forum] |
| Q7 ⇒ In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as TATA box [other wrong options] [Discuss in forum] |
| Q8 ⇒ The major function of RNA polymerase's sigma factor is recognition of the transcriptional start sequence [other wrong options] [Discuss in forum] |
| Q9 ⇒ The nucleons of eukaryotic cell has all of these [other wrong options] [Discuss in forum] |
| Q10 ⇒ Transcription results in messenger RNA [other wrong options] [Discuss in forum] |
| Q11 ⇒ Which of the following conditions would cause the release of the lac repressor protein from the lac operator site on DNA? Both (b) and (c) [other wrong options] [Discuss in forum] |
| Q12 ⇒ RNA polymerase in prokaryotes has a removable sigma subunit [other wrong options] [Discuss in forum] |
| Q13 ⇒ What is a promoter? A specific sequence of DNA to which RNA polymerase binds [other wrong options] [Discuss in forum] |
| Q14 ⇒ In prokaryotes, transcription is terminated by a protein called rho [other wrong options] [Discuss in forum] |
| Q15 ⇒ Enhancers are regions that modulate transcription [other wrong options] [Discuss in forum] |
| Q16 ⇒ Immediately after transcription a methylated guanine cap is added to the 51 end of the transcript [other wrong options] [Discuss in forum] |
| Q17 ⇒ The closed complex at bacterial promoters is in equilibrium with free RNA polymerase and the promoter [other wrong options] [Discuss in forum] |
| Q18 ⇒ Transcription of each set of rRNA genes by RNA polymerasel produces a single 45S rRNA precursor molecule [other wrong options] [Discuss in forum] |
| Q19 ⇒ The complex of RNA polymerase, DNA template and new RNA transcript is called transcription bubble [other wrong options] [Discuss in forum] |
| Q20 ⇒ Each tRNA molecule has a cloverleaf secondary structure consisting of three stem loops [other wrong options] [Discuss in forum] |
| Or |