Hormones that promote homeostasis _____
A) are not found as members of antagonistic signaling mechanisms
B) travel to target cells without passage in the plasma
C) utilize receptors that bind any hormone
D) initiate signal transduction in the target cell without binding to receptors
E) usually operate as part of a negative feedback system
Answer: E
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a. chromium. b. polychlorinated biphenyls. c. trash. d. oil. e. zinc.
Following mitosis, the daughter cells are identical to the parent cell.
Answer the following statement true (T) or false (F)
Fire can move, grow, reproduce, use energy, consume oxygen, and interact with its environment. Why is it not alive?
A) It does not have cells. B) It does not consist of complex, well-ordered structures. C) It does not pass on genes for traits to its offspring. D) All of the above are correct.
Which process underlies the thigmotropic behavior of a green bean tendril?
A) rotation of the tendril in response to photoperiod B) rotation of the tendril in response to a biological clock C) extra proliferation of cells on the shaded side of the tendril D) slower growth on the side where an object is touching the tendril