Exam Cell bio - Name: _ Date: _ 1. Which neurological...

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Version 1 Name: __________________________ Date: _____________ 1. Which neurological disorder is associated with a problem with the tau protein? A) Parkinson's Disease B) ALS (Amyotropic Lateral Sclerosis) C) Alzheimer's Disease D) Lou Gehrig's Disease 2. Which is the major inhibitory neurotransmitter in the nervous system? A) Glutamate B) Norepinephrine (NE) C) GABA D) Acetylcholine (ACh) 3. Which part of the kinesin protein contains binding sites for ATP and ADP? A) The two heavy chains (heads) B) The coiled tail C) The alpha and beta tubulin heterodimers D) The necklinker region 4. Put the following events in the correct order. 1.Norepinephrine (NE) binds to its beta receptor 2.phosphorylation of potassium channels 3.Adenylyl cyclase makes cAMP 4.decrease of potassium conductance across membrane 5.activation of G-protein A) 1, 4, 5, 2, 3 B) 1, 2, 5, 3, 4 C) 1, 5, 3, 2, 4 D) 1, 3, 4, 5, 2 5. Assume a mutation of the gene coding for the voltage-gated sodium channel resulted in channels that did not have the globular part of the protein, usually referred to as the "ball". Which of the following would you expect to see? A) An outward flow of sodium ions during the initial part of the action potential. B) A prolonged action potential in neurons expressing the mutated channel. C) A change in the ion selectivity of the channel of the mutated channels, allowing ions other than sodium to move through it. D) A change in the voltage sensitivity of the channel so that it does not open until more depolarized voltages. E) A and B are both correct
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Version 1 6. How do growth cones move and navigate in the developing nervous system? A) By assembling actin filaments on the side of filopodia facing attractive cues, and disassembling actin filaments on the side facing repulsive cues. B) By assembling neurofilaments on the side of lamellipodia facing attractive cues, and disassembling neurofilaments on the side facing repulsive cues. C) By assembling intermediate filaments on the side of lamellipodia facing attractive cues, and disassembling intermediate filaments on the side facing repulsive cues. D) By assembling microtubule filaments on the side of filopodia facing attractive cues, and disassembling microtubule filaments on the side facing repulsive cues. 7. Pick the correct statement regarding the process of forming a neural map in tectum of frogs. A) Ephrin is a chemoattractant molecule for axons from the retina. B) Axons from the temporal retina have growth cones expressing a higher concentration of ephrin (eph) receptors than growth cones on axons from nasal retina. C) axons from the retina grow into the tectum on the contralateral side D) B and C are both correct E) A, B and C are all correct 8. Melanopsin is _________ A) the photopigment found in light-sensitive retinal ganglion cells B) the photopigment found in rods and cones in the retina C) the stress hormone released by the hypothalamus late at night and early in the mornings D) the "hormone of darkness" released by the Pineal gland
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Exam Cell bio - Name: _ Date: _ 1. Which neurological...

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