Synapses are intersections where the axons of one neuron meet the dendrites of another neuron where neurons make direct contact with one another chemical structures that allow dendrites to send their messages to axons the area where neurons determine whether a stimulus exceeds the absolute threshold or not

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Witch type of microscope is used to view very small cell components like proteins and dna?

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?