Exam 1 with Answer Key for Animal Physiology | BIO 350, Exams of Animal Anatomy and Physiology

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BIO350 PRINT YOUR Name EXAM ¢f, Spring 2008 Cooper MULTIPLE CHOICE (2 points each) 41. What would be the most likely reason that an action potential is not generated in the dendrites or on the soma of a neuron that is depolarized? ay the plasma membrane is too thick 5) the electrical resistance in the cytoplasm is too high Ore density of the voltage-activated sodium channels is too low the plasma membrane is too thin €) there are no potassium channels present 2. With no oxygen and favorable conditions (temp, pH ete..) which metabolic pathway(s) would still occur ? a. glycolysis citric acid cycle (TCA, Kreb's cycle) &. electron transport chain 4. a,bandc # bandc 3. In most cells, the resting membrane potential is positive (i.e. inside is positive in relation to the outside). fy ) false Ise 4. A decrease in the membrane content of cholesterol, for eukaryotic plasma membr; Hi) human), a cell will. A) increase its fluidity B) detrease its fluidity £) have no effect on fluidity of the membrane 5. Given the following information what would be the equilibrium potential for the Nat ? The concentration of Ca++ outside the cell is 100 mM and the Ca++ concentration inside the cell is 10 mM. The cell is not permeable to K+ and is not permeable to Cl- or Nat. Givens: wy log ((1/[19) = -1 fog ((40){1}) = 1 log (100) = 2 log (1)=0 RT/2F = 0.029 Volts Ae 29 mV C)-29 mV D)-58 mV E) Omv Wav