On average, a wind turbine can produce 36,000 kilowatt-hours per day when the blades are constantly rotating. A typical household in the United States consumes 10,000 kilowatt-hours per year, and there are approximately 125 million households in the United States. If all wind turbines operate with a capacity factor of 25 percent, how many would be needed to provide energy for all homes in the United States?

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

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?