31. Which of the following enzymes can detect and correct the wrong inserted base during DNA replication ?
32. Which one is a ribozyme ?
A. Helicase
B. Ribonuclease - P
C. Peptidyl transferase
D. Both (B) & (C)
Answer : Option D
33. Which of the following pairs is not correctly matched ?
A. Recombinant DNA - DNA forming by union of segments of DNA from diffrent Sources
B. Purines - Nitrogenous bases Cytosine , thymine and Uracil
C. ATP - The principal energy carrying compound inthe cell
D. r-RNA - RNA molecules found in ribosomes
Answer : Option B
34. Which one of the following pairs is correctly matched ?
A. Ribosomal RNA - Carries amino acids to the site of protein synthesis
B. Transcription - Process by which protein in synthesized
C. Translation - Process by which m RNA carries the information from nucleus to ribosomes
D. Anticodon - Site of t-RNA that binds to the m-RNA
Answer : Option D
35. Which is not the step of translation ?
36. The enzyme amino acyl t-RNA-synthetase facilitates.
A. Joining two neighbouring amino acids on ribosomes
B. Adoption of amino acids by a t-RNA molecule
C. Insertion of amino acyl t-RNA into the ribosome sites
D. Transfer of amino acyl t-RNA from the ribosomal ‘A’ site to ‘P’ site
Answer : Option B
37. State the anticodon of initiation codon of protein synthesis
38. Which is the energy source for the process of elongation ?
39. What does a gene consist of ?
A. Promoter
B. Initiation site & termination site
C. coding sequence
D. All the above
Answer : Option D
40. Name the enzymes needed for lactose Catabolism in E.coli ?
A. ? - galactosidase, permease transacetylase
B. ? - galactosidasee Lactase, transacetylase
C. ? - galactosidase, lactase, permease
D. Lactase, permease, transacetylase
Answer : Option A