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-70 mV this potential difference in a resting neuron (Vr) is called the resting membrane potential, and the membrane is said to be polarized.
Elinor McDermott
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Why does the polarity of a cell membrane reverse during an action potential?
During an action potential the neuron receives a stimulus causing the cell membrane to become more permeable to sodium than potassium, calling the polarity to change.
What is a factor that determines whether molecule can cross a cell membrane?
size/ polarity can be the factors
Do particles with a negative charge or ones with a positive charge move most from one object to another?
depends on the polarity of the membrane
What to substances control the movement of the materials into and out of the cell?
Some of the proteins and lipids do control movement of materials into and out of the cell.
What problems are there with reverse polarity?
Reversing polarity ,changes the rotation of the device you are changing polarity on.
Which of the following factors does not affect membrane permeability?
The polarity of membrane phospholipids -Mastering Biology
What is a factor that determines of a molecule can cross a cell membrane?
Polarity
How is the cell membrane selectively permeable?
The pores of the cell membrane only allow objects of a certain size or polarity through. The lipids that make up the membrane have a certain polarity at the head and tail and only certain objects are allowed through because of this.
Which is a factor that determines wether a molecule can cross the cell membrane?
Polarity
Why does the polarity of a cell membrane reverse during an action potential?
During an action potential the neuron receives a stimulus causing the cell membrane to become more permeable to sodium than potassium, calling the polarity to change.
What is a factor that determines whether a molecule cross a cell membrane?
size/ polarity can be the factors
What is a factor that determines whether molecule can cross a cell membrane?
size/ polarity can be the factors
What is a factor that determines if a molecule can cross a cell membrane?
size/ polarity can be the factors
What is the main factors that influences membrane permeability?
The best answer here is probably polarity but size is the second runner up.
What are the two characteristics of a molecule that will keep it from passing through a membrane and how does each keep the molecule from passing through?
size and polarity
What are two characteristics of a molecule that will keep it from passing through a membrane and how does each keep the molecule from passing through?
size and polarity
Do particles with a negative charge or ones with a positive charge move most from one object to another?
depends on the polarity of the membrane
