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Ion channel gates close the pore of some ions channels in response to what?
Wiki User
∙ 11y ago
Streching of the cell membrane, a change in electrical charge, and the binding of specific molecules to the channel.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoPassive transport
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Name 3 stimuli that open and close gated channels?
Ion channels can open or close by stretching of the cell membrane, electrical signals, or chemicals in the cytosol or external environment.
Gated channels are especially important in regulating the transport of across a plasma membrane?
Gated channels are important in transporting ion and other necessary molecules. Cells need to maintain a balance with their environment. If ions could freely diffuse through the plasma membrane, the right ionic environment required for cellular reactions is not met. In the absence of the right ionic environment, many cellular reactions might stop. Therefore, there is a requirement for gates through which ions can travel into and out of the cell. A typical example is the sodium-potassium channel. Here, the entry of three sodium ions is balanced out by the exit of 2 potassium ions. This is how the gate is designed. Another example includes gates for the entry and exit of glucose molecules, a necessary nutrient for mammalian cells
What are the examples of types of channel protein?
Channel proteins are integral proteins (also transmembrane proteins) which has pores that allow passage of water and hydrophilic solutes through the cell membrane. some are open while others are gates that can be open or close in respond to different stimuli: 1. Ligand gate---> in respond to chemical 2. Voltage gate---> in respond ot electrical potential across the plasma membrane 3. Mechanical gate--> in respond to physical stress on a cell (strech,pressure)
What are the special structures in the cell membrane that allow water and sugar pass through it made of?
These special structures are called protein gates or protein channels. Water is able to diffuse through the cell membrane since it is a small molecule. However, there are channels called aquaporins that allow water to enter the cell. A glucose molecule cannot just diffuse into a cell. There are glucose channels on the surface of the cell membrane that bind glucose molecules and allow them to enter the cell.
What is an example of a channel protein?
Channel proteins are integral proteins (also transmembrane proteins) which has pores that allow passage of water and hydrophilic solutes through the cell membrane.some are open while others are gates that can be open or close in respond to different stimuli:1. Ligand gate---> in respond to chemical2. Voltage gate---> in respond ot electrical potential across the plasma membrane3. Mechanical gate--> in respond to physical stress on a cell (strech,pressure)
What changes occur to voltage-gated Na and K channels at the peak of depolarization?
Inactivation gates of voltage-gated Na+ channels close, while activation gates of voltage-gated K+ channels open.
What opens first in response to a threshold stimulus?
The activation gates of voltage-gated Na+ channels open, and Na+ diffuses into the cytoplasm.
What can be opened or closed in a cell membrane?
Gated Ion Channel. Not sure about the answer
What channel is the gates on?
ABC
What cell gates open immediately after action potential peak?
Sodium and potassium voltage gated ion channels.
What kind of gated channels are involved in the generation of graded potentials?
chemically regulated gates, voltage regulated gates
Why does action potential's move through axons in only one direction?
the axons and dentrites would get mixed up and the brain would be thinking in two ways and we would be confused to which one was which
How cell stop diffusion through protein channels?
by closing gates
What opens first in response to threshold stimulus?
The activation gates of voltage-gated Na+ channels open, and Na+ diffuses into the cytoplasm.
What is MOS in IC technology?
Metal Oxide Semiconductormetal gates (FETs)silicon dioxide insulator between the gates and channelssemiconductor channels (FETs)
What are the function by the gates in casting process?
channels or runners that connect the sprue to the pattern or mold cavity
What is a gated protein?
Its channel protein with flaps at the ends that act as gates
