Neuroscience 6th Edition Purves Test Bank With Questions and Answers ,34 Chapters

Neuroscience 6th Edition Purves Test Bank With Questions and Answers ,34 Chapters What is the physically largest neurotransmitter? - correct answers-neuropeptide transmitters Acetylcholine is used as a neurotransmitter at Answer; all of the above - correct answers-a) the neurotransmitter junction b) preganglionic synapses of the automatic visceral motor nervous system C) postganglionic synapses of the sympathetic nervous system D) widely distributed synapses of the central nervous system E) all of the above How many subunits does one typically find in the nicotinic acetylcholine receptors? - correct answers-Five The banded krait uses which neurotoxin to paralyze it's prey? - correct answers-Alpha-bungarotoxin Which of the following is not a feature of the glutamate signaling system - correct answers-The passage of large amounts of magnesium and calcium by NMDA receptors Listed below are the enzymes needed to synthesize epinephrine (adrenaline) 1) Dopamine beta-hydroxylase 2) Tyrosine hydroxylase 3) phenylethanolamin-N-methyl transferase 4) DOPA decarboxylase - correct answers-2;4;1;3 In a signal transduction cascade using G proteins and cAMP, what is not a signal amplification step - correct answers-Activation of adenylyl cyclase by G proteins which of the following statements about cell signaling pathways is correct - correct answers-Cellular responses are always short lived Cellular responses are always long lived Signaling is always initiated by memory bound receptors Signaling is always initiate by intracellular receptors Answer: None of the above The acetylcholine receptors at the neuromuscular junction would best be described as a - correct answers-Channel linked receptor Which of the following is an effector of the G protein initiates signaling mechanisms - correct answers-Adenylyl cyclase Guanylyl cyclase Phospholipase C Membrane-bound ion channels Answer: all of the above