Which of the following statements about positive feedback mechanisms is not true? a. Positive feedback mechanisms can result from human activity. b. Positive feedback mechanisms can occur naturally. c. Positive feedback mechanisms lead to increased change. d. Positive feedback mechanisms reduce change in a system. Please select the best answer from the choices provided A B C D
Answers: 2
Biology, 21.06.2019 14:00
Calvin ate a candy bar, which caused his body's blood glucose levels to become unbalanced. his body responded by initiating a feedback mechanism to return his body to homeostasis. place the steps of this feedback mechanism in order, starting with the blood glucose imbalance that occurred after calvin consumed the candy bar. a) calvin's blood glucose levels decreased. b) calvin's pancreas stopped secreting insulin. c) calvin's body cells started to take up glucose and store it as glycogen. d) calvin's blood glucose levels increased. e) calvin's pancreas started secreting insulin.
Answers: 1
Biology, 21.06.2019 17:40
Which of the following is an oxidation-reduction reaction? (pictured below)
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Biology, 21.06.2019 23:00
Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution
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Biology, 22.06.2019 02:50
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
Which of the following statements about positive feedback mechanisms is not true? a. Positive feedba...
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