Biology, 03.04.2020 11:48 20jessicar598
Before the chickenpox vaccination was available, children were often purposely exposed to the virus at
young age. What was the reason for doing this?
Answers: 3
Biology, 22.06.2019 02:50, mccay5016987
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?
Answers: 1
Biology, 22.06.2019 03:00, makeithappen60
What causes darkening of the skin as melanin production increases
Answers: 1
Before the chickenpox vaccination was available, children were often purposely exposed to the virus...
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