The protein globin is composed of how many polypeptide chains?
a. 1
b. 2
c. 3
d. 4
e. 5
D
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There is evidence that increased levels of CO2 in the atmosphere may increase Earth's surface temperature. How might this affect the spread of mosquitoes and malaria? Select all that apply
A. Warmer temperatures may increase the habitat range of mosquitoes. B. Warmer temperatures may result in malaria cases in new regions. C. Warmer temperatures will have no affect on mosquitoes or the incidence of malaria. D. Warmer temperatures will kill off mosquitoes, thereby decreasing malaria cases.
A stage 3 society, based on the demographic transition model, would not be characterized by ____
a. an r value > 0 b. industrialization c. a clumped population distribution d. (K
What are sensory organs that respond to body position and motion called?
a. cochlea b. vomeronasal organ c. organ of Corti d. organs of equilibrium e. olfactory receptors
Fire in the dry shrublands does not kill the small
bushy plants most probably because a. these plants have a tough protective bark. b. their leaves are very heavy and wet. c. they can resprout from root crowns. d. the Forest Service puts the fires out quickly. e. the fires burn the taller plants and burn out before reaching ground level.