BIO 203 Final Exam Form 0 Spring 2011

BIO 203 Final Exam Form 0 Spring 2011 - Turn OFF ALL...

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Turn OFF ALL Electronic Devices BIO 203 – FINAL EXAMINATION – SPRING 2011 May 16, 2011 Fill in your SCANTRON sheet as directed below. Do not forget to blacken the circles . ON YOUR SCANTRON: Enter your NAME at the top, last name first DO NOT FILL IN YOUR BIRTHDATE Enter your STONY BROOK ID# in the LOWER LEFT CORNER In the WHITE MARGIN of the TOP LEFT , print the FIRST TWO WORDS of QUESTION #1 In the WHITE MARGIN of the TOP RIGHT, SIGN YOUR NAME DO NOT MARK ANY OTHER SPACES (except answers) ON THE SCANTRON Exam: There are 40 QUESTIONS . Check your exam to make sure it is complete. The format of the exam is multiple choice. For each question you must choose the most incorrect answer. Mark your answers on the scantron sheet using a soft #2 pencil. Points: Each question is worth 2.5 points for a total of 100 points . There is no penalty for guessing. Answers & Grades: The answers will be posted on the BIO 203 Blackboard site after the exam is completed. Choose the Most Incorrect Answer
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BIO 203 – Spring 2011 Final Examination 16 May 2011 Page 2
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BIO 203 – Spring 2011 Final Examination 16 May 2011 Page 3 For all questions choose the most INCORRECT answer 1) Osmolarity and Tonicity: Solution A: 0.1 M sucrose + 0.1 M NaCl Solution B: 200 mM NaCl Solution C: 0.2 M glucose + 0.05 M NaCl + 0.1 M KCl ICF = 300 mOsmol a) If solutions A and C were separated by a membrane permeable only to water, there would be a net movement of water from solution A to solution C b) Placing a red blood cell in solution C would cause it to decrease in size c) If solutions A and B were separated by a membrane permeable only to water, there would be no net movement of water between the two solutions d) None of the solutions is hypotonic 2) Resting membrane potential (any variable not mentioned is normal and held constant): a) The Goldman-Hodgkin-Katz equation accurately predicts the resting membrane potential of an excitable cell, assuming a normal functioning electrogenic Na + -K + ATPase pump b) If a cell was only permeable to Na + and [Na + ] extracellular was 15 mM and [Na + ] intracellular was 145 mM then the resting membrane potential would be ≈ 60 mV c) If the Nernst potential for K + was -70 mv, the resulting resting membrane potential would be greater than -70 mv (i.e., more positive) d) If one doubled the extracellular concentration of Na + , the resting membrane potential would be more positive 3) Peripheral nervous system: a) Nicotinic ACh receptors, acting as non-specific cation channels, will respond to the synaptic release of ACh by generating depolarizing graded potentials in sympathetic postganglionic neurons b) The neurotransmitter released by sympathetic preganglionic neurons and parasympathetic preganglionic neurons is identical but the respective postsynaptic receptors are dissimilar c) Dual reciprocal innervation is not a property of the autonomic innervation of ventricular cardiac muscle but is a property of the autonomic innervation of the upper respiratory airways
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This note was uploaded on 05/21/2011 for the course BIO 203 taught by Professor Johncabot during the Spring '08 term at SUNY Stony Brook.

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BIO 203 Final Exam Form 0 Spring 2011 - Turn OFF ALL...

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