CAMPBELL BIO ETXT+ACCESS >IC<
11th Edition
ISBN: 9781323770689
Author: Reece
Publisher: PEARSON C
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Chapter 48, Problem 9TYU
DRAW IT Suppose a researcher inserts a pair of electrodes at two different positions along the middle of an axon dissected out of a squid. By applying a depolarizing stimulus, the researcher brings the plasma membrane at both positions to threshold. Using the drawing below as a model, create one or more drawings that illustrate where each action potential would terminate.
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Students have asked these similar questions
A researcher conducts a voltage clamp experiment on a giant squid axon. She clamps a typical neuron at +52mV. In the graph on the right, draw out the current that she will most likely record at this voltage.
You have a photoreceptor cell in a dish. You are recording its membrane potential while flashing different intensities of light. Which of the following would you observe?
Group of answer choices
The cell hyperpolarizes, with brighter light causing more hyperpolarization than dimmer lights
The cell depolarizes, with brighter light causing more depolarization than dimmer lights
If the light is bright enough to reach threshold, it will fire an action potential
No change in membrane potential will be observed
The following graph represents a membrane potential recording in the dark, then during a brief flash of flight at the time indicated by the arrow. This could be a recording from a:
a) rod cell
b) bipolar cell
c) ganglion cell
d) any of the above
Chapter 48 Solutions
CAMPBELL BIO ETXT+ACCESS >IC<
Ch. 48.1 - Prob. 1CCCh. 48.1 - Describe the basic pathway of information flow...Ch. 48.1 - WHAT IF? How might increased branching of an axon...Ch. 48.2 - Under what circumstances could ions flow through...Ch. 48.2 - WHAT IF? Suppose a cell's membrane potential...Ch. 48.2 - MAKE CONNECTiONS Review Figure 7.10, which...Ch. 48.3 - How do action potentials and graded potentials...Ch. 48.3 - In multiple sclerosis (from the Greek skleros,...Ch. 48.3 - How do both negative and positive feedback...Ch. 48.3 - WHAT IF? Suppose a mutation caused gated sodium...
Ch. 48.4 - Prob. 1CCCh. 48.4 - Some pesticides inhibit acetylcholinesterase, the...Ch. 48.4 - Prob. 3CCCh. 48 - How would severing an axon affect the flow of...Ch. 48 - Suppose you placed an isolated neuron in a...Ch. 48 - Prob. 48.3CRCh. 48 - Prob. 48.4CRCh. 48 - Level 1: Knowledge/Comprehension 1. What happens...Ch. 48 - Level 1: Knowledge/Comprehension 1. What happens...Ch. 48 - Where are neurotransmitter receptors located? (A)...Ch. 48 - Why are action potentials usually conducted in one...Ch. 48 - Which of the following is the most direct result...Ch. 48 - Suppose a particular neurotransmitter causes an...Ch. 48 - WHAT IF? Ouabain, a plant substance used in some...Ch. 48 - Prob. 8TYUCh. 48 - DRAW IT Suppose a researcher inserts a pair of...Ch. 48 - EVOLUTION CONNECTION An action potential is an...Ch. 48 - Prob. 11TYUCh. 48 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 48 - Prob. 13TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Imagine there is a toxin that blocks voltage-gated calcium channels (there probably is). How would this affect synaptic transmission? Explainarrow_forwardYou prepare a squid giant axon and inject it with a tiny volume of solution containing 0.1 M NaCl and 0.1 M KCl in which both the Na+ and K+ ions are radioactively labeled. The two labeled ions are now inside the axon. You place this axon in a beaker containing seawater medium. The voltage gated sodium and voltage gated potassium channels are completely blocked using specific inhibitors - so they are closed If you now remove the voltage gated potassium channel inhibitor and keep the voltage gated sodium channel blocked, which of the radioactively labeled ions would you expect to appear within the seawater medium, while the neuron remained at rest (no stimulation of axon). Please explain If you now remove both the sodium and potassium voltage gated channel inhibitors - which of the radioactively labeled ions would you expect to appear most rapidly within the seawater medium, after the neuron had been stimulated to conduct a number of action potentials? Please explainarrow_forwardWhich of the following statements regarding polarized membranes is incorrect? a. There is a separation of the charge by a membrane, resulting in its ability to do work. b. An RMP of –60 mV indicates that there are more positive ions inside the axon than an RMP of –70 mV. c. A resting membrane potential (RMP) of –90 mV indicates the there are more positive ions inside the axon than an RMP of –70 mV. d. There is a difference in the charges found on the inside of the membrane to the outside.arrow_forward
- Describe what makes an incoming signal excitatory. Describe what makes an incoming signal inhibitory. Give typing answer with explanation and conclusionarrow_forwardFigure 2.9 shows synaptic connections to produce a cell that responds to “A or B” or “A and B.” Construct a diagram for a cell that responds to “A and B if not C.”arrow_forwardA perturbation that alters the membrane potential at a site on a neuronal axon will pass to neighboring segments of the axon by... a. electronic spead b. active transport c. symport d. antiport e. facilitated diffusionarrow_forward
- fill in the blank The repolarization phase of action potentials in neurons is due primarily to ............(ion) flow out of the cellarrow_forwardWhich is not true about axons? They arise from the cell body they send information to other cells they contain dendritic spines they recive information from other cellsarrow_forwardThink about how the neuron membrane-capacitor works – via the motion of charged ions from inside-to-outside and outside-to-inside the cell. Describe phenomenologically how you think the membrane potential can be made to propagate down the length of a neuron. Draw some diagrams to aid your description.arrow_forward
- For you to see the words on your compute, quite a few different types of neurons are required. what types of neurons are involved in signal transmission for you to see the words? Describe all the neural structures fro required for seeing.arrow_forwardFill in the blank: An action potential is a rapid sequence of changes involving _______________________ and repolarization.arrow_forwardFill in the blank The all-or-none principle, associated with the action potential, states that once membrane potential reaches......... magnitude an action potential will be generated and will be the samearrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license