Biology, 18.10.2021 06:30, Gearyjames8
The oldest-known fossils on Earth are 3.5-billion-year-old cyanobacteria. Cyanobacteria are microscopic photosynthetic organisms that live in or near water. Use the description of photosynthesis in the image to answer the following questions.
Answers: 3
Biology, 22.06.2019 00:00, donmak4015
As a small change in a person's dna can cause a genetic disorder
Answers: 1
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
The oldest-known fossils on Earth are 3.5-billion-year-old cyanobacteria. Cyanobacteria are microsco...
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