Translation is a process that (a) requires DNA ligase (b) converts RNA to DNA 38
ID: 216206 • Letter: T
Question
Translation is a process that (a) requires DNA ligase (b) converts RNA to DNA 38. (e) is semi-conservative (d) requires tRNA, mRNA and ribosomes (e) produces a polyscharride What is the order of the anticodon sequence if given the following DNA sequence (AGATTTCGCCCCAAA)? 39. (a)UCUAAAGCGGGGUUU (b) TCTAAAGCGGGGTTT ()AGATTTCGCCCAAA (d) TCTUUUGCGGGTTT (e AGAUUUCGCCCCAAA 40. The mating of F+ strains with F- strains can result in (a) the transfer of antibiotic resistant genes (b) the immediate production of a Hfr strain (c) transferring genes needed for conjugation and transfer to the recipient (d) integration of genes into the donor (e) the production of a capsule 41. Exonucleases are needed to (a) cut out RNA (b) needed for excision repair (c) photoreactivation (d) breakdown DNA-RNA strands (e) none of the above TRUE OR FALSE (2 pts) Mark ? for True and B for False 42. Replica plating is a method for direct selection 43. RNA is a double stranded molecule in the case of tRNA. 44. Intercalating agents cause mismatch mutation only on the 5'-3' DNA strand. 45. Plasmids can replicate independently from the bacterial chromosome. 46. DNA polymerase 3and- synthesizes from a 5'-3' direction continuously on the leading strand. 47. Transposon are examples of a mobile gene pool 48. In the process of transcription, the DNA(+) strand is needed to make mRNA. 49. The enzyme DNA helicase is needed to make a replication fork. 50. The terminator sequence stops the process of translation.Explanation / Answer
Q.38 Answer D- Translation is a process that requires tRNA, mRNA, ribosome.
Translation is process in which protein synthesis occurs using codon sequence present on mRNA. Ribosome work as peptide synthase enzyme. Using amino acid braught by tRNA , peptide synthase(ribosome) synthesizes peptide.
Q.39 answer is A.
Q.40 answer is C. mating between F+ and F- strain can result in transfer of genes needed for conjugation and transfer of recepient. because projeny of this cross is both daughter cells becomes F+ . F plasmid have Tra D genes and other genes which are responsible for conjugation. only F plasmid is transferred not the chromosomal genes.
Q.41 answer is B. Exonuclease are needed for Excision repair. Exonuclease play important role of removing mis match nucleotide and creating a gap so that correct nucleotide can be inserted. Exonuclease I, Exonuclase VII (RecJ) are involved in mis repair mechanism in E.coli. It is replication coupled repair.
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