An oil spill happened at the wild harbor salt marsh on cape cod, massachusetts in 1969. the oil has persisted in the ground since then. how is the green crab used as evidence for the idea that oil still exists in the lower layers of the soil? these organisms show increased reproductive rates compared with previous rates. these organisms show increased predation on other species than prior to the spill. these organisms dig more shallow burrows than they used to. these organisms migrate to deeper waters than they did before.

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?

Adescription of a type of bio biotechnology (genetic engineering, cloning, or artificial section) one benefit or one risk for the individual (based on whether you are for or against it) one benefit or one risk for society (based on whether you are for or against it) one benefit or one risk for the environment (based on whether you are for or against it)

What characteristic makes a cell membrane selectively permeable