MCQ Book Questions

Q52180. Which of the following genes of the E.coli “Lac operon” codes for a constitutive protein?

Q52181. In the process of transcription, the flow of genetic information is from

Q52182. The anticodon region is an important part of the structure of

Q52183. The region of the Lac operon which must be free from structural gene transcription to occur is

Q52184. Another name for reverse transcriptase is

Q52185. In the ’lac operon’ concept, which of the following is a protein?

Q52186. Degeneracy of the genetic code denotes the existence of

Q52187. The normal function of restriction endonuc- leases is to

Q52188. In contrast to Eukaryotic mRNA, pro- karyotic mRNA is characterized by

Q52189. DNA ligase of E. coli requires which of the following co-factors?

Q52190. Which of the following is transcribed during repression?

Q52191. mRNA is complementary copy of

Q52192. Synthesis of RNA molecule is terminated by a signal which is recognised by

Q52193. The binding of prokaryotic DNA depen- dent RNA polymerase to promoter sits of genes is inhibited by the antibiotic:

Q52194. In E. coli the chain initiating amino acid in protein synthesis is

Q52195. Amanitin the mushroom poison inhibits

Q52196. How many high-energy phosphate bond equivalents are required for amino acid activation in protein synthesis?

Q52197. Translation results in the formation of

Q52198. Elongation of a peptide chain involves all the following except

Q52199. The ‘rho’ (ρ) factor is involved