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The chemically gated channel known as NMDA allows what ions entry into the nerve cell?
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∙ 12y ago
Na+
Wiki User
∙ 12y ago
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What type of channel on the postsynaptic membrane binds neurotransmitter?
a chemically gated channel
Plasma membrane exhibits chemically gated ion channels?
Yes, many cells have chemically gated ion channels. This means that the channel requires a specific chemical to open the gate and allow for things to pass through the membrane
How are chemically gated channels activated?
Chemically-gated ion channels are receptor membrane proteins that are permeable to specific ions. The 'gating' part of it refers to the channel being open only once activated; which in this case will be by a chemical. An example would be the AMPA glutamate receptor, which has a channel pore that is permeable to sodium ions. Only by binding to glutamate (a neurotransmitter) does the channel allow sodium ions to enter the cell.
What happens when a ligand gated channel is stimulated?
When a ligand-gated channel is stimulated, there is movement toward the extracellular side of the cell membrane. This allows the channel to become permeable to different ions.
What can be opened or closed in a cell membrane?
Gated Ion Channel. Not sure about the answer
What type of channel on the postsynaptic membrane binds neurotransmitter?
a chemically gated channel
Plasma membrane exhibits chemically gated ion channels?
Yes, many cells have chemically gated ion channels. This means that the channel requires a specific chemical to open the gate and allow for things to pass through the membrane
What is a voltage-gated membrane channel?
Voltage-gated channels are proteins in the cell membrane which open when stimulated by a voltage (an electrical signal). The voltage causes the channel to open, thereby allowing the entry or exit of whatever substance the channel relates to. An example of this the the voltage-gated sodium channels on neurons. When an action potential (a voltage), passes over the cell, it open these channels and allows sodium to enter the cell.
How are chemically gated channels activated?
Chemically-gated ion channels are receptor membrane proteins that are permeable to specific ions. The 'gating' part of it refers to the channel being open only once activated; which in this case will be by a chemical. An example would be the AMPA glutamate receptor, which has a channel pore that is permeable to sodium ions. Only by binding to glutamate (a neurotransmitter) does the channel allow sodium ions to enter the cell.
What is a gated channel?
It is a channel through a membrane that can be opened or closed by chemical or electrical events.
What is a stimulus gated channel?
There are voltage-gated ion channels and ligand-gated ion channels, and since both are stimuli the term stimulus-gated is a redundancy.
What happens when a ligand gated channel is stimulated?
When a ligand-gated channel is stimulated, there is movement toward the extracellular side of the cell membrane. This allows the channel to become permeable to different ions.
What are mechanical gated channels?
Chemically-gated ion channels are receptor membrane proteins that are permeable to specific ions. The 'gating' part of it refers to the channel being open only once activated; which in this case will be by a chemical. An example would be the AMPA glutamate receptor, which has a channel pore that is permeable to sodium ions. Only by binding to glutamate (a neurotransmitter) does the channel allow sodium ions to enter the cell.
Which membrane potential occurs because of the influx of Na plus through chemically gated channels in the receptive region of a neuron?
An excitatory postsynaptic potential, a type of graded potential, occurs because of the influx of Na+ through chemically gated channels in the receptive region, or postsynaptic membrane, of a neuron. Graded potentials are generated by chemically gated channels, whereas action potentials are produced by voltage-gated channels.
What can be opened or closed in a cell membrane?
Gated Ion Channel. Not sure about the answer
What does a gated channel in a cell membrane allow?
osmosis
What would happen if a chemically gated sodium channel in the postsynaptic membrane were completely blocked?
The nervous system would not work if ion channels were blocked. It would be like parking your car on a hose and trying to get water out of the hose.
