Which statement describes the most common ways in which students and professional scientists communicate the results of their scientific research? Students communicate results in oral reports to the class, and professional scientists communicate results in written reports Students communicate results in scientific journals, and professional scientists communicate results in laboratory reports Students communicate results in laboratory reports, and professional scientists communicate results in scientific Joumals Students communicate results through secondary sources, and professional scientists communicate results through primary sources

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?

The function of the excretory system is to control homeostasis and

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture