sample_exam1_b

sample_exam1_b - Sample Exam 1 from 2002 pg. 1 of 8...

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Sample Exam 1 from 2002 pg. 1 of 8 NEUROBIOLOGY 100 Exam 1, Fall Print name here ______________________________________ READ QUESTIONS CAREFULLY I agree to have my exam returned in the boxes in Briggs Hall YES ___, NO ___ with the understanding that, if I checked no, the exam will only be available for pickup during office hours. Sign below to have your exams returned to the boxes. ___________________________________ TIME AND DATE OF THE SECTION YOU ARE ENROLLED IN ________ ________________________________________________________________________ The name of your TA ________________________
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Sample Exam 1 from 2002 pg. 2 of 8 Scoring Sheet For Instructor and TA use ONLY 1 (1.7 points) _____________ (1.7 points) _____________ 2 (0.4 points) ______________ (0.4 points) ______________ (0.6 points) ______________ 3 (0.7 points) _____________ (2.0 points) _____________ 4. a (0.7 points) ______________ b (0.7 points) ______________ c (0.7 points) _______________ d (0.5 points) _______________ 5. a (0.6 points) ______________ b (0.6 points) ______________ c (0.6 points) _______________ d (0.4 points) _______________ 6.1 (0.8 points) _________________ 6.2 (0.9 points) __________________ Bonus (0.4 points) _______________
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Sample Exam 1 from 2002 pg. 3 of 8 Part 1 (3.4 points). You record from a special cell that has a resting membrane potential of 9 mV . When the cell is subjected to stretch special ion channels open and the membrane voltage goes to 73 mV. Through a series of experiments you determine that when open, these special ion channels are permeable to, Ca 2+ , I - , or Li + , but only ONE of these ions. Given the concentrations and permeabilities below, which type of ion (Ca 2+ I - or Li + , choose only ONE) is the special stretch channel permeable to and why ? The concentrations and permeabilities are as follows. [Ca 2+ ] outside = 351 mM [I - ] outside = 117 mM [Li + ] outside = 421 mM [Ca 2+ ] inside = 217 mM [I - ] inside = 20 mM [Li + ] inside = 14 mM P Ca = 65 P I = 18 P Li = 8 Show your calculations and provide and explain the reasoning behind your choice of answer. Show Calculations: (1.7 points) Why? (in other words explain the reasoning behind your choice of answer) (1.7 points) Go to next page for problem 2 Do Not write in this box
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Sample Exam 1 from 2002 pg. 4 of 8 Part 2 (1.4 points) Schematically fill in the figures below to show how the time vs. voltage waveform changes, as we
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sample_exam1_b - Sample Exam 1 from 2002 pg. 1 of 8...

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