Exam+2--Fall+2004 - B io 2 25E xamI I F all 2 004 Biology2...

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Bio 225 Exam II Fall 2004 Biology 225 Principles of AnimalPhysiologl' Name Bxam II (100 pts) Fall2004 (Denver) Thirty questions total; Two sections (Part I - pp. 1-7;Part II - pp. 8-13) Part I. Multiple Choice (total55 points). Each question is worth 2.5 points. Answer all of the questions. Multiple choice questions have only one answer. 1.) The French physiologist Claude Bernard was lire first to describe the concept of homeostasis. Homeostasis refers to: a) the maintenance of the composition of thc internal environment in a condition of equilibrium. b) the maintenance of the composition of the internal environment in equilibrium with the external environment. O the maintenance of the composition of the internal environment in a condition of constancy. d) the maintenance of the composition of the internal environment at a higher osmolarity than the external environment. e ) c & d . 2.) Choose the proper hierarchy of physiologicai functions (i.e., which are most important, in descending order, for survival of an individual) from the following list. 'd) temperature and electrolyte balance, respiration, nutrition, excretion, reproduction. '!) temperature and electrolyte balance, nutrition, excretion, respiration, ' reproduction. )L{ respiration, nutrition, excretion, temperature and electrolyebalance, reproduc- tion. @ respiration, temperature and electrolyte balance, excretion, nutrition, reproduction. e) none ofthe above. 3.) Activetransport usually moves molecules a) in the same direction as does diffusion. 6) in the opposite direction as does diffusion. c) in a direction that tends to bring about equilibrium. d) toward higher pH. e) toward higher osmotic potential.
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Bio225 Exam II Fall2004 4.) An ancient Chinese remedy for goiter is Sargasso weed (seaweed). What do you think could be the active component in Sargasso weed that reduces goiter? (O iodine e) chlorophyll 5.) Which of the following hormones might be elevated in the blood plasma during fasting? G) glucagon
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