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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 10:20
During convection, less dense fluid rises and denser fluid sinks.
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Biology, 22.06.2019 15:00
Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources
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Biology, 22.06.2019 21:00
Amino acids with hydrophobic r groups are most often found buried in the interior of folded proteins.true or false.
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The body is divided into anterior and posterior portions by the...
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