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Biology, 22.06.2019 02:50
Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?
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Biology, 22.06.2019 04:30
Why are scientists concerned about the depletion of the ozone levels in the stratosphere?
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Biology, 22.06.2019 04:40
Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes
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Biology, 22.06.2019 05:00
Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist
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What is , deposition, erosion AND weathering....
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