Similar cells that perform a particular function are known as
A) organisms. B) tissues. C) organs. D) organ systems.
B
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What hormone is most involved in labor?
a. estrogen b. prolactin c. oxytocin d. prostaglandin e. progesterone
The mechanism in which the end product of a metabolic pathway inhibits an earlier step in the pathway is most precisely described as _____
A) metabolic inhibition B) feedback inhibition C) allosteric inhibition D) noncooperative inhibition E) reversible inhibition
Interleukins and erythropoietin are
a. growth factors. b. Cdk's. c. cyclins. d. antitumor agents. e. intracellular signaling molecules.
Two species of salamander have similar ranges, but one breeds from January to March, while the second one breeds from March to May. This is an example of
A. habitat isolation. B. behavioral isolation. C. mechanical isolation. D. gametic isolation. E. temporal isolation.