The video uses the term Chemosynthesis to describe how Riftia pachyptila is the primary producer in this deep sea ecosystem. This implies that the overall organism (Animal, symbiotic bacteria, and endosymbiotic bacteria) produce reduced organic carbon compounds through chemolithoautotrophy. You may need to investigate this a bit, but explain how carbon fixation occurs in this organism.

Which of the following conclusions can be drawn

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?

What terms describes being out of water after being submerged