BIO 1406/07 W/CONNECT/LM NEW >IC<
BIO 1406/07 W/CONNECT/LM NEW >IC<
16th Edition
ISBN: 9781260075762
Author: Raven
Publisher: MCG CUSTOM
bartleby

Videos

Textbook Question
Book Icon
Chapter 43, Problem 1U

Which of the following best describes the electrical state of a neuron at rest?

a. The inside of a neuron is more negatively charged than the outside.

b. The outside of a neuron is more negatively charged than the inside.

c. The inside and the outside of a neuron have the same electrical charge.

d. Potassium ions leak into a neuron at rest.

Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

The electric potential is generated across the membrane by the neurons. The efficient functioning of the neurons is based on the generation of electric potential because it modifies the propagation of the signals across the cells.

Answer to Problem 1U

Correct answer:

The negative potential is maintained inside the neuron as compared to that of the outside when the neuron is at resting position. The difference between the potential between the inside and outside of a neuron is called the resting potential. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement:

The negative potential of the inside of the cell is maintained due to the difference of the concentration of ions, such that the inside of the cell has a high level of potassium and low level of sodium. The outside of the cell has a high level of sodium and low level of potassium.

Option a. is given as “The inside of a neuron is more negatively charged than the outside”.

As, “potassium is present in high levels inside the cell, thus the inside of the cell has more negative potential that outside”, is the right answer.

Hence, option a. is correct.

Reasons for the incorrect statements:

Option b. is given as “The outside of a neuron is more negatively charged than the inside”.

The outside region of the cell is more positively charged than the inside of the cell. So, it is a wrong answer.

Option c. is given as “The inside and the outside of a neuron have the same electrical charge”.

Due to the difference between the concentrations of the ions inside and outside of neuron, they both cannot have same electrical charge. So, it is a wrong answer.

Option d. is given as “Potassium ions leak into a neuron at rest”.

There are more potassium ions inside the neuron than that of the outside of the neuron. The potassium ions will leak outside of the neuron. So, it is a wrong answer.

Hence, options b., c., and d. are incorrect.

Conclusion

The resting state of a neuron is defined as the state when the inside of the neuron is more negatively charged than the outside region of the neuron.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
You have been hired as a public relations specialist to give invertebrates a good name. After all, they are much more than just creepy crawly bugs! Your first task though is to convince yourself that is true. The best way to do that is to start close to home. Find something in your house that is a product obtained directly from an invertebrate or only due to an invertebrate’s actions. Describe the product, its function and utility, as well as any human manufactured alternatives. Be sure to highlight the advantages of obtaining this directly from nature. Keep in mind, a product can be something you use, wear, eat, or enjoy for its visual appeal.
Use the following tree diagram to answer Questions #8-10.   8) Which of the following two animals are the most closely related based on the tree to the left? a) Pig and camel b) Hippo and pig c) Deer and cow 9) CIRCLE on the tree diagram where the common ancestor between a hippo and a cow is. 10) Put a SQUARE on the tree diagram where the common ancestor between a pig and a peccary is.
Explain: Healthy Cell Function Overview→ Briefly describe how a healthy cell usually works: metabolism (ATP production), pH balance, glycogen storage, ion transport, enzymes, etc. Gene Mutation and Genetics Part→ Focus on the autosomal recessive mutation and explain: How gene mutation affects the cell. How autosomal inheritance works. Compare the normal and mutated gene sequences simply. → Talk about possible consequences of a faulty hydrolytic enzyme.
Knowledge Booster
Background pattern image
Biology
Learn more about
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Text book image
Body Structures & Functions Updated
Biology
ISBN:9780357191606
Author:Scott
Publisher:Cengage
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Nervous System - Get to know our nervous system a bit closer, how does it works? | Neurology; Author: FreeMedEducation;https://www.youtube.com/watch?v=6O-0CVAgaEM;License: Standard youtube license