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Why can't sodium ions cross the membrane without the use of a protein channel?
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How does nutrients cross plasma membrane?
Things like oxygen, CO2 and lipids cross the membrane with simple diffusion. Water can cross the membrane with osmosis when the water moves through a channel protein in the plasma membrane. Glucose, potassium, sodium etc. moves through a carrier protein in the membrane with the process of active movement. In the process of active movement energy is needed and it is given by the glucose or ATP from the cell.
What form of cellular transportation helps human cells maintain their sodium and potassium concentration?
The sodium/potassium pump, the sodium leak channel and the potassium leak channel.
What type of transport protein is a sodium potassium pump?
It is a carrier protein
Through what type of proteins does active transport occur?
A carrier protein (as opposed to a channel protein). An example of a carrier protein is the Na+/K+ pump.
Do ions need a transport protein to enter bilayer?
Yes! K+ or Na+ or exchanged with its specific potassium and sodium pump protein on the membrane.
Why Sodium and potassium ion can only cross in axon membrane through protein channel explain why?
At rest sodium in the outside and potassium on the inside as action potential propagate along the axon, depolirization happens and sodium channel opens and allow sodium ions to flood into the neurone. A wave of deporization spread along the neuron, the neuron membrane contain specialised protein called channels. the channel from pore.
When a sodium channel opens and sodium rushes into a myocyte the cell membrane becomes?
The cell becomes depolarized
How does nutrients cross plasma membrane?
Things like oxygen, CO2 and lipids cross the membrane with simple diffusion. Water can cross the membrane with osmosis when the water moves through a channel protein in the plasma membrane. Glucose, potassium, sodium etc. moves through a carrier protein in the membrane with the process of active movement. In the process of active movement energy is needed and it is given by the glucose or ATP from the cell.
What is a component of an animal nerve Cell membrane?
A component is the Sodium ion channel.
What are the special structures in the cell membrane that allow materials such as water and sugar through made of?
PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!
What type of transport protein is a sodium potassium pump?
It is a carrier protein
What form of cellular transportation helps human cells maintain their sodium and potassium concentration?
The sodium/potassium pump, the sodium leak channel and the potassium leak channel.
What is a sodium ion leak channel?
It's where Sodium Ions can flow freely between the cell membrane to maintain equilibrium.
What type of channel does sodium and potassium use to diffuse across the plasma membrane of all cells?
voltage type of channel
Why is the cell membrane called gatekeepers of the cell?
The cell membrane is a gatekeeper of the cell which means it chooses the cells intake. Any toxic substances will not be allowed in the cell. Water for example is a fluid that is perm permeable. Permeable means "allowing passage" and impermeable means "to not allow any passage". Cell membrane is made up of 2 layers of fat particles. Many of the protein are imbedded.
Can sodium still enter a membrane if ATP is not present to activate the sodium potassium pump?
no as there is no energy to form a conrormational change in the protein pump
Through what type of proteins does active transport occur?
A carrier protein (as opposed to a channel protein). An example of a carrier protein is the Na+/K+ pump.
