Podcast
Questions and Answers
What is the result of K+ ions diffusing out of the cell?
What is the result of K+ ions diffusing out of the cell?
- The inside of the cell becomes relatively positive
- The outside of the cell becomes relatively negative
- The inside of the cell becomes relatively negative (correct)
- There is no change in the cell's polarity
What is the consequence of Na+ ions diffusing into the cell?
What is the consequence of Na+ ions diffusing into the cell?
- The inside of the cell becomes relatively positive (correct)
- There is no change in the cell's polarity
- The inside of the cell becomes relatively negative
- The outside of the cell becomes relatively positive
In nerve diffusion potentials, what is the role of K+ ions?
In nerve diffusion potentials, what is the role of K+ ions?
- Diffuses into the cell, leaving the inside positive
- Causes an equal distribution of charge inside and outside the cell
- Diffuses out of the cell, leaving the inside negative (correct)
- Has no effect on the cell's polarity
How does the direction of diffusion potential depend on the relative concentrations of ions inside vs outside the cell?
How does the direction of diffusion potential depend on the relative concentrations of ions inside vs outside the cell?
Potassium diffusion potential is established when K+ ions diffuse into the cell, leaving it relatively negative inside.
Potassium diffusion potential is established when K+ ions diffuse into the cell, leaving it relatively negative inside.
Sodium diffusion potential is established when only Na+ ions can diffuse out of the cell, leaving it relatively positive inside.
Sodium diffusion potential is established when only Na+ ions can diffuse out of the cell, leaving it relatively positive inside.
The direction of the diffusion potential depends only on the concentration of the ion involved inside vs outside the cell.
The direction of the diffusion potential depends only on the concentration of the ion involved inside vs outside the cell.
In nerve diffusion potentials, K+ ions have a higher concentration outside cells and diffuse in, leaving the inside positive.
In nerve diffusion potentials, K+ ions have a higher concentration outside cells and diffuse in, leaving the inside positive.
What is the primary function of the plasma membrane?
What is the primary function of the plasma membrane?
What is the gel-like substance in the cytoplasm called?
What is the gel-like substance in the cytoplasm called?
Which organelle is responsible for protein modification and sorting within the cell?
Which organelle is responsible for protein modification and sorting within the cell?
What is the main constituent of the plasma membrane?
What is the main constituent of the plasma membrane?
Where is the genetic material found within a typical cell?
Where is the genetic material found within a typical cell?
Which component of the cell fills the space between the nucleus and the cell membrane?
Which component of the cell fills the space between the nucleus and the cell membrane?
What is the primary function of the nucleolus?
What is the primary function of the nucleolus?
Which organelle is often referred to as the powerhouse of the cell?
Which organelle is often referred to as the powerhouse of the cell?
What is the main function of the endoplasmic reticulum (ER)?
What is the main function of the endoplasmic reticulum (ER)?
Which statement best describes the function of the Golgi apparatus?
Which statement best describes the function of the Golgi apparatus?
What is the role of the cell membrane in regulating the passage of substances?
What is the role of the cell membrane in regulating the passage of substances?
Which organelle is responsible for producing ribosomes?
Which organelle is responsible for producing ribosomes?
What is the function of the fluid mosaic model in the cell membrane?
What is the function of the fluid mosaic model in the cell membrane?
Which organelle plays a role in lipid metabolism and detoxification?
Which organelle plays a role in lipid metabolism and detoxification?
What is the crucial function of the cell membrane?
What is the crucial function of the cell membrane?
