Tag: IIT JAM Biotechnology Previous Year Question paper Topic Wise

35. Which part of the genomic DNA contains the sequence corresponding to the 5′ untranslated region (5′ UTR)? (A) Exon (B) Intron (C) Upstream of the transcription start site (D) […]

34. Identify the statement that is TRUE of operons. (A) Fine regulation of the expression of individual genes are made possible by operons (B)Only genes involved in carbohydrate metabolism are […]

33.  A 152 nm long Watson-Crick double helical DNA (B-DNA) will contain_____turns. How Many Turns Are Present in a 152 nm Long Watson-Crick B-DNA Molecule? Understanding the B-DNA Helical Turn […]

32. Match the entries in Group I with the entries in Group II Group I                         Group II DNA replication  […]

31. In bacteria, a ribosome synthesizes a protein containing 300 amino acids from mRNA in 20 seconds. If the average lifetime of a mRNA is 2 minutes, the number of […]

30. Which of the following is(are) INCORRECT in the regulation of the trp operon? (A) It is an example of a negatively controlled repressible operon (B) The amino acid Trp […]

29. Which of the following is true of protein synthesis ONLY in prokaryotes? (A)Translation and transcription are coupled (B)The codon AUG codes for the start signal (C)The tRNA anticodon can […]

28. Which of the following is NOT involved in eukaryotic translation? (A) Ribosome (B) Spliceosome (C) mRNA (D) tRNA Which Component Is Not Involved in Eukaryotic Translation? Understanding Eukaryotic Translation […]

27. In a double stranded DNA, which of the following ratios is/are always equal to 1? A, T, G and C denote the number of bases. (A) (A+T)/(G+C) (B) (A+G)/(T+C) […]

26. When bacteria are grown in glucose-depleted media containing high concentration of lactose, expression of lac operon genes is activated by (A) the binding of lac repressor in the operator […]