The tail fibers on phages are associated with a) penetration b) attachment c) tr

Question

The tail fibers on phages are associated with a) penetration b) attachment c) translation d) transcription The phages QB and MS2 are a) single stranded RNA lytic phages b) have a large burst size c) Have double stranded DNA. d) Both a and b are correct. Phage lambda DNA integrates into the E.coli genome at a specific site through a process called a) transduction b) translation c) transcription d) site specific recombination Which enzyme removes the lambda viral DNA from the host DNA once the repressor molecules are removed or no longer active? a) excisase b) ligase c) lipase d) nuclease Which enzyme destroys the host DNA once a cell is infected with a virus? a) DNAase b) RNAase c) Reverse transcriptase d) None of the above True False (true = A; false =B). The enzyme lysozyme helps a phage break through the bacterial cell wall. The induction of a temperate phage can be achieved by exposing the bacterial cells to ultra violet light. This is probably the

Explanation / Answer

answers:

37. b (attachment)

Explanation : Tail fibers on phages are associated with attachment

38. d

Explanation: two forms of ssRNA phages

39. a

Explanation: it is a transduction

40. b

Explanation : ligase is used cohesive ending joing

41. c

Explanation: Reverse transcriptase

42.

a) True

b) False

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