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the movement of ions across a cell membrane.
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∙ 12y ago
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Why do you think movement of ions through ion channels is generally a slower process that diffusion?
Let's take something obvious. Where would a crowd of persons move faster? Where there is absolutely nothing to prevent their passage or where there is an open gate? The same thing applies to the movement of ions. Movement of ions through ion channels is a slower process because (with a more scientific approach!) their movement is determined by the number of these ion channels whereas for diffusion, there is absolutely nothing to prevent the passage of the molecules.
Describe gating mechanism existing in channels?
G protein-gated ion channels are specific ion channels located in the plasma membrane.
Do membranes of the dendrites contain chemically gated ion channels?
Yes, the membranes of dendrites contain chemically gated ion channels. These channels open or close in response to specific neurotransmitters binding to their receptors, allowing ions such as sodium, potassium, or calcium to flow into or out of the dendrite. This ion movement is crucial for generating electrical signals in dendrites and communication between neurons.
When the nervous system signals a muscle to contract what ion channels open?
sodium ion
What substances moves across the cell membrane with the help or carrier molecules?
Ions across a cell membrane. It is a form of passive transport. Ions such as sodium(Na+), potassium (K+), calcium (Ca2+), and chloride (Cl-). Each ion channel is usually specific for one type of ion.
The resistance to an ion's movement across a membrane is determined by?
ion channels within the membrane
What Aids the movement of substances into and out of the cell.?
protein channels aid the movement of substances into and out of the cell.
Why do you think movement of ions through ion channels is generally a slower process that diffusion?
Let's take something obvious. Where would a crowd of persons move faster? Where there is absolutely nothing to prevent their passage or where there is an open gate? The same thing applies to the movement of ions. Movement of ions through ion channels is a slower process because (with a more scientific approach!) their movement is determined by the number of these ion channels whereas for diffusion, there is absolutely nothing to prevent the passage of the molecules.
Which ion channels open in response to a change in membrane potential?
voltage-gated ion channels
Describe gating mechanism existing in channels?
G protein-gated ion channels are specific ion channels located in the plasma membrane.
Do membranes of the dendrites contain chemically gated ion channels?
Yes, the membranes of dendrites contain chemically gated ion channels. These channels open or close in response to specific neurotransmitters binding to their receptors, allowing ions such as sodium, potassium, or calcium to flow into or out of the dendrite. This ion movement is crucial for generating electrical signals in dendrites and communication between neurons.
Can any ion pass through the ion channels?
yes it can
What has the author Andrea Becchetti written?
Andrea Becchetti has written: 'Integrins and ion channels' -- subject(s): Integrins, Cellular signal transduction, Ion channels, Signal Transduction, Physiology, Ion Channels, Metabolism
What passive channels are likely found in the membrane of olfactory receptor?
Answer this qOlfactory Receptor: Na+ ion channels Pacinian Corpuscle: K+ leakage channels Free Nerve Ending: Na+ ion channeluestion…
Are ion channels carbohydrates?
Ion channels are not carbohydrates but are pore-forming membrane proteins. One of their functions is to include establishing a resting membrane potential.
What structures in the cell membrane function as ion channels?
protein channels
What substances moves across the cell membrane with the help or carrier molecules?
Ions across a cell membrane. It is a form of passive transport. Ions such as sodium(Na+), potassium (K+), calcium (Ca2+), and chloride (Cl-). Each ion channel is usually specific for one type of ion.
