Which of the following geological time periods is missing from the grand canyon ?
a. s...
Biology, 27.12.2019 11:31 Jesseniapacheco31
Which of the following geological time periods is missing from the grand canyon ?
a. silurian
b. permian
c. devonian
d. cambrian
give explanation too the correct answer
Answers: 2
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Which of the following systems in absorbing oxygen and releases carbon dioxide
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Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom
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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?
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Aperson is outside exercising. body temperature begins to rise, and the person starts to sweat. their body temperature then returns to normal, and the body stops sweating. a positive b negative c allosteric d homeopathic
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