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Mostly potassium and some chloride.
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∙ 11y ago
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Do bases have a high or low concentration of hydrogen ions?
Bases have a low concentration of hydrogen ions. In contrast, acids have a high concentration of hydrogen ions.
Is it true that An acidic solution has a very high concentration of OH ions?
No it is false -it has a high concentration of H+ ions
What condition is neuron in when the outside of the neuron has a net positive charge and the inside has net negative charge?
This is called the resting potential (inactive state) of the neuron. However, when a neurotransmitter binds to receptors, electrical stimulus is applied, etc. to induce an opening of ion channels in the membrane of the neuron, positive ions rush into the neuron from the outside to the inside, and result in a sharp increase of the positive charge density (due to more positive ions) inside the neuron. Beyond a certain threshold, this can induce the creation of an action potential, causing the neuron to fire. After the action potential is created, and the neuron fires, there is a short refractory period where the neuron cannot be fired again due to stimuli, when positive ions are pumped back out of the neuron, negative ions are brought into the neuron, and then the ion channels close, leaving the neuron in a polarized state, and returning it to a resting potential.
What process that alows movement of gases and ions from areas of high consentration to low consentration?
Diffusion is the process that allows movement of gases and ions from areas of high concentration to areas of low concentration. This process is driven by a concentration gradient.
What does it mean to have a high concentration of H plus ions?
That you have an acidic solution.
What causes the inside of neuron becomes positive?
Outside a neuron, there are mostly sodium ions but some potassium ions. Inside the neuron, there are only potassium ions. Since both sodium and potassium are positive ions, and they are in a higher concentration outside the cell, that makes the outside have a more positive charge than the inside. But for all intents and purposes, the outside is positive, and the inside is negative. When the sodium ions (Na+) rush into the cell during depolarization, it causes the concentration of positive ions inside the cell to go WAY up, making the inside more positive than the outside. This means that the outside is now negative and the inside now positive.
The cytoplasm of a certain cell such as a neuron which already has a high concentration of k plus ions can continue to take k plus ions up into the cell this is the result of?
Active Transport
What is the state when an electrical charge of a neuron is said to be at a resting potential?
The resting potential is the normal equilibrium charge difference (potential gradient) across the neuronal membrane, created by the imbalance in sodium, potassium, and chloride ions inside and outside the neuron.
The concentration of potassium ions inside the cell is usually what?
The concentration of potassium ions inside the cell is usually MORE THEN then the concentration of potassium.
A polarized neuron has fewer positive ions inside in comparison to the outside of the neuron?
True
Do bases have a high or low concentration of hydrogen ions?
Bases have a low concentration of hydrogen ions. In contrast, acids have a high concentration of hydrogen ions.
What is a polarized neuron?
A neuron that is polarized is also at rest potential. At this stage it is not conducting an impulse and has sodium ions on the outside and potassium ions on the inside.
What is restpotential?
The resting membrane potential of a neuron is about -70 mV (mV=millivolt) - this means that the inside of the neuron is 70 mV less than the outside. At rest, there are relatively more sodium ions outside the neuron and more potassium ions inside that neuron.
When a neuron is at rest the ions inside are mostly?
polarized
How does the inside of the resting neuron compare to the outside in terms of electrical charge and Na plus concentration?
The concentration of negatively charged proteins and positively charged potassium ions, K+, is greater inside the cell than outside. In contrast, the concentration of sodium ions, Na+, is greater outside the cell than inside. The concentrations of Na+ and K+ ions are partly due to the action of the sodium-potassium pump, which actively moves Na+ out of cells while moving K+ in.
Is it true that An acidic solution has a very high concentration of OH ions?
No it is false -it has a high concentration of H+ ions
The charged particles located inside and outside of the neuron are called?
ions
