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a stronger stimulus will be required to cause an action potential
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Are Excitable cells like neurons are more permeable to sodium than to potassium?
More permeable to K than Na
Where is potassium reabsorbed and secreted?
The absorption of sodium affects the secretion of potassium by making it more difficult for the potassium to be permeable by blocking the areas it travels through.
What is the effect of heat on beetroot?
The effect of heat on beetroot is that the membrane becomes impacted. It causes the membrane to be more permeable.
Why is The plasma membrane is much more permeable to K than to Na?
Even when both those atoms are encapsulated with water, potassium is smaller than sodium.
What would happen to the membrane potential if a substance that makes the membrane permeable to ions is added to the cell?
If a subsance is applied to a cell that makes the membrane more permeable to ions, the interior voltage changes. If the interior voltage becomes more positive (say from Ð70 mV to Ð60 mV), this is called a depolarization. If the interior voltage becomes more negative (say from Ð70 mV to Ð80 mV) it's called a hyperpolarization.
When a nerve is activated by a threshold stimulus the membrane becomes more permeable to?
Potassium and Sodium
Are Excitable cells like neurons are more permeable to sodium than to potassium?
More permeable to K than Na
When is a neurolemma more permeable to potassium than sodium?
during depolarization
Where is potassium reabsorbed and secreted?
The absorption of sodium affects the secretion of potassium by making it more difficult for the potassium to be permeable by blocking the areas it travels through.
If the pacemaker cells in the SA node become more permeable to potassium ions the?
Both the heart rate will decrease and the membrane will hyperpolarize
What is the effect of heat on beetroot?
The effect of heat on beetroot is that the membrane becomes impacted. It causes the membrane to be more permeable.
Why is The plasma membrane is much more permeable to K than to Na?
Even when both those atoms are encapsulated with water, potassium is smaller than sodium.
How does potassium become an ion?
When a potassium atom becomes an ion, the potassium atom donates one of its electrons, specifically the only electron in its valence shell, to another more electronegative atoms. The original potassium atom then becomes a potassium cation with formula K+.
Which is more permeable fine sand course sand or soil?
Fine sand is more permeable.
What would happen to the membrane potential if a substance that makes the membrane permeable to ions is added to the cell?
If a subsance is applied to a cell that makes the membrane more permeable to ions, the interior voltage changes. If the interior voltage becomes more positive (say from Ð70 mV to Ð60 mV), this is called a depolarization. If the interior voltage becomes more negative (say from Ð70 mV to Ð80 mV) it's called a hyperpolarization.
When a neutral atom such a potassium loses 1 electron its charge becomes what number?
Potassium's charge becomes 1+ since it is Group 1A on the periodic table. The elements in that group all like to lose 1 electron to become more like the noble gases in Group 8A.
What happens when a neuron is stimulated by another neuron?
The cell membrane becomes more permeable to the sodium potassium ions.
