4.
which of the following represents an ion?
(1 point)
a particle having 14 protons, 14 neutrons, and 14 electrons
a particle having 9 protons, 9 neutrons, and 10 electrons
a particle having 19 protons, 21 neutrons, and 19 electrons
a particle having 1 proton, 3 neutrons, and 1 electron

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?

2. does the given statement describe a step in the transformation of the graph off(x) = x2 that would result in the graph of g(x) = -5x + 2)? a. the parent function is reflected across the x-axis. o yes nob. the parent function is stretched by a factor of 5. yes noonc. the parent function is translated 2 units up.o yes

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?