Neuroscience 6th Edition by Purves – Complete Test Bank with Answers & Study Questions for All 34 Chapters Inclusive

This document is a comprehensive test bank and study guide for Neuroscience, 6th Edition by Dale Purves et al., featuring over 100 questions with verified correct answers covering all 34 chapters. It includes multiple-choice, short-answer, and diagram-based questions on topics such as neural signaling, synaptic transmission, ion channels, sensory systems, pain, vision, and synaptic plasticity. Each answer is referenced to textbook sections and tagged with Bloom’s Taxonomy levels for effective study and exam preparation. Ideal for students, instructors, and self-learners in neuroscience, biology, and related fields. Test Bank For Neuroscience 6th Edition By Dale Purves & 7 Others Chapter : Electrical Signals of Nerve Cells Multiple Choice 1. Which type(s) of electrical signals occur(s) within the neural circuit for a spinal reflex? a. Receptor potential only b. Action potential only c. Synaptic potential only d. Receptor potential and action potential only e. Receptor potential, synaptic potential, and action potential Answer: e Textbook Reference: Electrical Signals of Nerve Cells Bloom’s Level: 2. Understanding 2. The resting membrane potential typically ranges from to . a. –90 mV; 90 mV b. 40 mV; 90 mV c. 40 V; 90 V d. –40 mV; –90 mV e. 0 mV; 90 mV Answer: d Textbook Reference: Electrical Signals of Nerve Cells Bloom’s Level: 1. Remembering 3. An action potential occurs if current injected into a neuron the neuron to reach potential. a. depolarizes; synaptic b. hyperpolarizes; synaptic c. depolarizes; threshold d. hyperpolarizes; threshold e. hyperpolarizes; resting Answer: c Textbook Reference: Electrical Signals of Nerve Cells Bloom’s Level: 2. Understanding 4. How will a neuron respond to an injection of negative current? a. It will become hyperpolarized. b. It will have a positive electrical response. c. It will generate a single action potential. d. It will generate multiple action potentials. e. It will reach the threshold potential. Answer: a Textbook Reference: Electrical Signals of Nerve Cells Bloom’s Level: 2. Understanding 5. The amplitude of the action potential of a given neuron is a. larger in response to depolarizing currents of greater magnitude. b. dependent on the magnitude of the sensory stimulus. c. related to the number of synapses on the neuron. d. smaller if the resting potential of the neuron is lower. e. always the same. Answer: e Textbook Reference: Electrical Signals of Nerve Cells Bloom’s Level: 2. Understanding 6. Which stimulus is most likely to evoke an action potential? a. Small hyperpolarizing current pulse b. Large hyperpolarizing current pulse c. Small depolarizing current pulse d. Large depolarizing current pulse e. Microelectrode insertion Answer: d Textbook Reference: Electrical Signals of Nerve Cells Bloom’s Level: 1. Remembering 7. Subthreshold current injected into an axon flows along the axon and with distance from the site of injection. a. actively; remains constant b. actively; decays c. actively; grows d. passively; remains constant e. passively; decays Answer: e Textbook Reference: Long-Distance Transmission of Electrical Signals Bloom’s Level: 2. Understanding 8. What is the mechanism of action of most local anesthetics? a. Hyperpolarize resting membrane potential of neurons b. Block glutamate receptors in excitatory synapses c. Enhance the activity of inhibitory synapses by acting on postsynaptic GABA receptors d. Block Na+ channels involved in the generation of action potentials e. Bind opiate receptors Answer: d Textbook Reference: Clinical Applications: Anesthesia and Neuronal Electrical Signaling Bloom’s Level: 2. Understanding 9. Which statement about active ion transporters is true? a. They are selectively permeable to certain ions. b. They are functionally similar to ion channels. c. They allow ion movement down the concentration gradient. d. They move all ions against the concentration gradient. e. They move certain ions against the concentration gradient. Answer: e Textbook Reference: How Ion Movements Produce Electrical Signals Bloom’s Level: 2. Understanding 10. Which statement best describes the Nernst equation? a. It relates the equilibrium potential of an ion to its intracellular concentration. b. It relates the equilibrium potential of an ion to its extracellular concentration. c. It relates the equilibrium potential of an ion to its intra- and extracellular concentrations. d. It relates the equilibrium potentials of multiple ions to their intracellular concentrations. e. It relates the equilibrium potentials of multiple ions to their intra- and extracellular concentrations. Answer: c Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 1. Remembering 11. In a two-compartment model of a cell with a K+-permeable membrane, at K+ equilibrium potential, there is flux of K+ ions. a. a large inward b. a large outward c. no net d. a small inward e. a small outward Answer: c Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 2. Understanding 12. In a two-compartment model of a cell with a K+-permeable membrane and a 10-fold excess of K+ in the inside compartment, how would the membrane potential change if all K+ ions were replaced by Na+ ions? a. It would double. b. It would be reduced by half. c. It would not change. d. It would become positive. e. No potential would be generated. Answer: e Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 3. Applying 13. In a two-compartment model of a cell with a K+- and Na+-permeable membrane and a 10-fold excess of K+ in the inside compartment, how would the membrane potential change if all K+ ions were replaced by Na+ ions? a. It would double. b. It would be reduced by half. c. It would not change. d. It would become positive. e. No potential would be generated. Answer: c Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 3. Applying 14. In a two-compartment model of a cell with a K+- and Ca2+-permeable membrane and a 10-fold excess of K+ in the inside compartment, how would the membrane potential change if all K+ ions were replaced by Ca2+ ions? a. It would double. b. It would be reduced by half. c. It would not change. d. It would become positive. e. No potential would be generated. Answer: b Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 3. Applying 15. In a two-compartment model of a cell with a K+- and Cl–-permeable membrane and a 10-fold excess of K+ in the inside compartment, how would the membrane potential change if all K+ ions were replaced by Cl– ions? a. It would double. b. It would be reduced by half. c. It would not change. d. It would become positive e. No potential would be generated. Answer: d Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 3. Applying 16. In a two-compartment model of a cell with a K+-permeable membrane and a 10-fold excess of K+ in the inside compartment, how would K+ ions flow across the membrane? a. They would flow from the inside compartment to the outside compartment. b. They would flow from the outside compartment to the inside compartment. c. There would be no flow of K+ ions. d. They would flow in both directions at the same time in equal molar quantities. e. They would flow in both directions, but the flow would be negligible. Answer: a Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 3. Applying 17. In a two-compartment model of a cell with a K+-permeable membrane and a 10-fold excess K+ in the inside compartment, the membrane potential is experimentally made more negative than the K+ equilibrium potential. How would K+ ions flow across the membrane? a. They would flow from the inside compartment to the outside compartment. b. They would flow from the outside compartment to the inside compartment. c. There would be no flow of K+ ions. d. They would flow in both directions at the same time in equal molar quantities. e. They would flow in both directions, but the flow would be negligible. Answer: b Textbook Reference: Forces That Create Membrane Potentials Bloom’s Level: 3. Applying 18. Under which circumstances is the Goldman equation equivalent to the Nernst equation? a. When a membrane is permeable to only one ion b. When a membrane is permeable to multiple ions c. When the membrane is permeable to positively charged ions only d. When the membrane is permeable to negatively charged ions only e. When permeability of the membrane is different for different ions Answer: a Textbook Reference: Electrochemical Equilibrium in an Environment with More Than One Permeant Ion Bloom’s Level: 4. Analyzing 19. The resting potential of a cell is negative because a. there is an excess of K+ outside of the cell at rest. b. at rest there is an excess of K+ outside of the cell, and the membrane is permeable chiefly to K+. c. at rest there is an excess of K+ inside the cell, and the membrane is permeable chiefly to K+. d. at rest there is an excess of K+ inside the cell, but the membrane is permeable to all ions. e. there is an excess of Cl– ions outside of the cell at rest. Answer: c Textbook Reference: Electrochemical Equilibrium in an Environment with More Than One Permeant Ion Bloom’s Level: 4. Analyzing