Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 48, Problem 5IQ
Summary Introduction
To label: The components of chemical synapse following depolarization of synaptic terminal.
Introduction: Depolarization refers to an alteration in membrane potential, such that the inside of the membrane is made less negative when compared to the outside.
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Chapter 48 Solutions
Study Guide for Campbell Biology
Ch. 48 - Prob. 1IQCh. 48 - a. What is the principal cation inside the cell?...Ch. 48 - The following diagram shows the changes in...Ch. 48 - Prob. 4IQCh. 48 - Prob. 5IQCh. 48 - Prob. 6IQCh. 48 - Prob. 7IQCh. 48 - Develop a flowchart or diagram or write a...Ch. 48 - Prob. 1TYKCh. 48 - Prob. 2TYK
Ch. 48 - During a neurons resting state a. there are more...Ch. 48 - Which of the following contribute(s) to the...Ch. 48 - Prob. 5TYKCh. 48 - Prob. 6TYKCh. 48 - Prob. 7TYKCh. 48 - After the rapid depolarization of an action...Ch. 48 - Nodes of Ranvier are a. gaps where Schwann cells...Ch. 48 - Prob. 10TYKCh. 48 - Signal transmission is faster in myelinated axons...Ch. 48 - Which of the following statements concerning...Ch. 48 - Prob. 13TYKCh. 48 - Prob. 14TYKCh. 48 - Prob. 15TYKCh. 48 - Prob. 16TYKCh. 48 - Prob. 17TYKCh. 48 - If the binding of a neurotransmitter to its...
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- What is a synapse? Explain the difference between an excitatory and an inhibitory synapse.arrow_forwardDescribe three mechanisms that stop synaptic transmission.arrow_forwardWhen an impulse arrives at the synapse, the synaptic vesicles open and release neurotransmitters into the cleft within a thousandth of a second. Within another ten thousandth of a second, these molecules have diffused across the cleft and bound to receptor sites in the effector cell. In what two ways is transmission across a synapse terminated so that the neuron’s signal is concluded?arrow_forward
- At a synapse, opening one sodium channel (for the normal duration before closing) causes a small depolarization. Opening a handful of sodium channels may cause a larger depolarization. Opening more channels may lead to an even larger depolarization, up to a point. Then the depolarization would be the same regardless of how many other sodium channels opened. Explain why the number of open channels increases the depolarization, and why it doesn’t matter beyond a certain point.arrow_forwarddraw the events occuring at an excitatory synapse and an inhibitory synapse and name one excitatory and one inhibitory neurotransmitter.arrow_forwardGiven the steps shown below, which of the following is the correct sequence for transmission at a chemical synapse? 1. neurotransmitter binds with receptor 2. sodium ions rush into neuron's cytoplasm 3. action potential depolarizes the presynaptic membrane 4. ion channel opens to allow particular ion to enter cell 5. synaptic vesicles release neurotransmitter into the synaptic cleft O 1, 2, 3, 4, 5 O 5, 1, 2, 4, 3 O 2, 3, 5, 4, 1 O4, 3, 1, 2, 5 O 3, 2, 5, 1, 4arrow_forward
- Describe mechanisms by which synaptic transmission is rapidly stopped. Why is it important that transmission be stopped?arrow_forwardDescribe at least 2 processes at the synapse that shift the effect of an action potential of a pre synaptic cell on the response of a post synaptic cell.arrow_forwardIdentify the following as properties of electrical synapses, chemical synapses, or botharrow_forward
- Arrange the events that occur during synaptic transmission. Use letters A-F to denote the correct sequence. Use the diagram on the right as a clue. Example: SENDING NEURON B 1. lon channel opens Synepto SYNAPSE 1. lon channel opens 2. Neurotransmitter is released into synaptic cleft SYNAPTIC CLEFT RECEVING HEURC4 Neurotransmitter 3. Vesicle fuses with plasma membrane Jon chennels Neurotransmtter Reseptor deurotranemitter brohen down and sa sd 4. Neurotransmitter binds to receptor BOns 前 命 5. Action potential arrives 6. lon channel closes the obeicos in the bo y belo M (A narrow_forwardWhat are the criteria for identification of the neurotransmitter at a particular synapse? Which two criteria are sufficient to conclude that a candidate substance is a neurotransmitter?arrow_forwarddefine synapsisarrow_forward
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