a. oxygen
Biology, 15.10.2019 14:30, Thania3902
Earth's atmosphere has the lowest concentration of which of the following gases?
a. oxygen
b. nitrogen
c. carbon dioxide
d. argon
Answers: 1
Biology, 21.06.2019 22:00, RSanyuathey711
Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth
Answers: 2
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 03:50, FoxGirl1971
2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms
Answers: 2
Biology, 22.06.2019 14:00, catherinethomas0826
To confirm when to exclude children from school it’s recommended that you refer to guidelines from which of the following organizations
Answers: 1
Earth's atmosphere has the lowest concentration of which of the following gases?
a. oxygen
a. oxygen
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