PNB 3251 Exam Actual Questions and Answers Real Updated 2024/2025 Terms Solved 100%

PNB 3251 Exam Actual Questions and Answers Real Updated 2024/2025 Terms Solved 100% _____ are inhibitory neurotransmitters A. GABA and Glycine B. Glycine and Glutamate C. Acetylcholine and Benzodiazepine D. AMPA and Kainate - answerGABA and Glycine Figure 4 shows the relationship between Vm and gK+ for a cell whose [K+]in = 250 mM and [K+]out = 17 mM. At 25 degrees C, this cell's resting potential is -40 mV. What is the cell's K+ conductance when Vm = -20 mV. A. 50 mOhm/cm2 B. -20 mV/cm2 C. 15 mS/cm2 D. -20 mS/cm2 E. 15 mV/cm2 - answer15 mS/cm2 Which of the following is not a true statement about G-protein-coupled receptors? A. The hydrolysis of GTP to GDR is involved in terminating the receptors' action B. The receptor's ligand (e.g., the neurotransmitter) binds directly to the ion channel C. They use intermediate molecule(s) to activate ion channels D. They are also known as 7-transmembrane receptors - answerThe receptor's ligand (e.g., the neurotransmitter) binds directly to the ion channel Clathrin is involved in the mechanism for A. Endocytotic building of vesicles from the plasma membrane B. Fusing the synaptic vesicle to the plasma membrane C. Exocytosis of synaptic vesicles D. All of the above E. A and B - answerEndocytotic budding of vesicles from the plasma membrane Drug X, when applied to a nerve axon, results in both a gradual decrease in the amplitude of individual action potentials and a depolarization of the resting potential, both of which develop over a period of several hours. The drug is most likely: A. Blocking the Na+/K+ ATPase pump B. Blocking the voltage-dependent K+ permeability C. Blocking the voltage-dependent Na+ permeability D. Blocking the process of Na+ inactivation E. Increasing the rate at which voltage-dependent changes in K+ permeability occur - answerBlocking the Na+/K+ ATPase pump Complete this sentence. The function of vesicular neurotransmitter transporters on the surface of synaptic vesicles depends on a pre-existing _____ gradient, maintained by _____, thus NT transporters behave like _____. A. Proton; vesicular proton-ATPases; ion exchangers B. Ca++; vesicular Ca++-ATPases; ion exchangers C. Cl-; vesicular Cl--K+ co-transporters; co-transporters D. Proton; vesicular proton-ATPases; co-transporters E. Ca++; vesicular Ca++-proton ATPases; co-transporters - answerProton; vesicular proton- ATPases; ion exchangers Which of the following is most necessary