Which of the following correctly describes the net charges on either side of the cell membrane during potassium ion movement? A) Equal charge inside and outside due to ion balance.... Which of the following correctly describes the net charges on either side of the cell membrane during potassium ion movement? A) Equal charge inside and outside due to ion balance. B) Positive inside, negative outside from sodium influx. C) Positive inside, negative outside from active transport. D) Negative inside, positive outside due to protein loss.
Understand the Problem
The question is asking for an explanation of the net charges on either side of a cell membrane specifically during the movement of potassium ions. It provides multiple choice options that describe possible scenarios of charge distribution based on ion movement and balance.
Answer
Negative inside, positive outside due to protein loss.
The correct description is negative inside, positive outside due to protein loss.
Answer for screen readers
The correct description is negative inside, positive outside due to protein loss.
More Information
The net charge difference across the cell membrane results in a more negative inside compared to the outside, largely due to the presence and movement of ions, including protein anions and ion pumps like the sodium-potassium pump.
Tips
A common mistake is assuming ions distribute equally, forgetting that proteins inside cells contribute significantly to the membrane's charge.
Sources
- Physiology, Resting Potential - StatPearls - NCBI Bookshelf - ncbi.nlm.nih.gov
- The Action Potential | Anatomy and Physiology I - Lumen - courses.lumenlearning.com
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