Exam+1+--+Fall+2006+_Denver-Wilson+Practice_+--+Answers

Exam+1+--+Fall+2006+_Denver-Wilson+Practice_+--+Answers -...

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Bio 225 Practice Questions – Exam 1 Answer Key Which of the following are steps in the Scientific Method? a) Identify the problem and review the available knowledge on the subject. b) Form an hypothesis and devise experiments to test the hypothesis. c) Accept or reject the hypothesis based on the experimental results. d) Publish the results if they are significant and of value. e) All of the above. The French physiologist Claude Bernard was the first to describe the concept of homeostasis. Homeostasis refers to: a) the maintenance of the composition of the internal environment in a condition of equilibrium. b) the maintenance of the composition of the internal environment in equilibrium with the external environment. c) 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. Choose the proper hierarchy of physiological functions (i.e., which are most important, in descending order, for survival of an individual ) from the following list. a) temperature and electrolyte balance, respiration, nutrition, excretion, reproduction. b) temperature and electrolyte balance, nutrition, excretion, respiration, reproduction. c) respiration, nutrition, excretion, temperature and electrolyte balance, reproduc- tion. d) respiration, temperature and electrolyte balance, excretion, nutrition, reproduction. e) none of the above.
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The main function(s) of the plasma membrane is to: a) serve as a barrier to the movement of molecules between the intra- and extracellular environments and to form a framework for the protein components of the cell. b) allow the free movement of molecules between the intra-and extracellular environments and to form a framework for the protein components of the cell. c) allow the free movement of molecules between the intra-and extracellular environments and to form a framework for the phospholipid components of the cell. d) serve as a barrier to the movement of molecules between the intra- and extracellular environments and to form a framework for the phospholipid components of the cell. Which of the following allows for the transport of sodium against its concentration gradient?
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This note was uploaded on 07/11/2011 for the course BIOLOGY 225 taught by Professor Pavgi during the Spring '10 term at University of Michigan.

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Exam+1+--+Fall+2006+_Denver-Wilson+Practice_+--+Answers -...

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