Biology, 23.07.2019 18:30 kookycookiefanx
Many scientists believe life was able to leave the waters edge and move further in on land, away from the water, due to a development a) amniotic eggs. b) reptiles. c) better shelters. d) four-chambered hearts.
Answers: 1
Biology, 22.06.2019 02:50, mccay5016987
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?
Answers: 1
Biology, 22.06.2019 18:30, lerinmarie
Fungi exist as single cells or as branching networks of multicellular filaments. how does the structure of filaments relate to their function
Answers: 2
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