Explain how phage immunity works
What will be an ideal response?
Ans: Repressor protein synthesized from the resident prophage genome will bind to the operators of any invading genome with the same immunity region, preventing them from activating the lytic cycle. The cell is said to be immune from lytic infection by another phage of the same type.
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Which of the following is the layer of the meninges that has direct contact with the brain?
A) arachnoid mater B) geezin mater C) pia mater D) dura mater E) dinan mater
A holoenzyme is composed of an apoenzyme one or more (cofactors/inhibitors/substrates).
Fill in the blank(s) with the appropriate word(s).
Which of the following is true about the general transcription factors in eukaryotic transcription?
What is occurring in step 6?
a. fission b. fusion c. fertilization d. the first meiotic division e. the second meiotic division