The tail fibers on phages are associated with a) penetration b) attachment c) pr
ID: 87284 • Letter: T
Question
The tail fibers on phages are associated with a) penetration b) attachment c) protein 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) transduction b) translation c) transcription d) site specific recombination Which enzyme removes the lambda viral DNA from the host DNA molecules are removed or no longer active?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 a) DNAase b) RNAase c) Reverse transcriptase d) None of the above True or False (true = A; false = B). The enzyme lysozyme bacterial cell wall. The induction of a temperate phage can be achieved by light. This is probably the result of a) destroying the repressor molecules and allowing RNA and transcribing a messenger RNA. b) destroyiExplanation / Answer
37. Tail fibres of a phage actually help both in attachment and penetration.But there are exceptions to this case. Since first attachment is important, the relevant option here will be attachment.
Answer is b
38.Answer is a
Both the phages are simple phages and are single stranded RNA phages.
39.answer is a
Transduction is the process of introduction of foreign DNA into any bacterial cell and its subsequent incorporation into host DNA, through a virus.
40. Answer is d
It is the restriction endonulease that destroys viral DNA making it inactive
41. Answer is c
Reverse transcriptase is the enzyme that destroys infected host DNA but does not affect the uninfected portions.
42. Sorry, cannot view the question asthe image is cutting it. I hope this will help you answer the question.
Lysozyme enzyme is a protective enzyme, small in nature but huge on imapct as it destroys bacterial cell walls.It is present in our nasal mucous, gastrc secretions, tear drops, etc.
43. There is a typo in the sheet. 43 is missing.
44. I am unable to view the question properly and completely and cannot help you.
40.
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