0
What else can I help you with?
What pumps in the cell membrane?
The sodium potassium pump is a form of active transport in which sodium and potassium end up switching places (one into the cell and one leaves the cell). The pump is located in the cell membrane.
What ions are important in muscle contraction and impulse conduction as an action potential reaches a synapse?
In muscle contraction and impulse conduction, important ions include calcium (Ca2+), sodium (Na+), and potassium (K+). Calcium plays a key role in triggering muscle contraction by binding to troponin, sodium influx starts the action potential at the synapse, while potassium efflux helps repolarize the membrane after the action potential passes.
Which two metals explode in water and why?
Sodium and potassium are two metals that can explode in water because they react violently with water to produce hydrogen gas. This reaction is highly exothermic, causing the hydrogen gas to ignite and explode.
What polyatomic ion do all bases end in?
The polyatomic ion we often see in a base is the hydroxide ion, which has OH- as its chemical formula. Some examples of bases are lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide. They are written LiOH, NaOH, KOH and Ca(OH)2, respectively.
Describe an action potential?
Firstly, a stimulus causes an influx of sodium ions into the axon. This causes further sodium voltage-gated ion channels to open, causing more sodium ions to move into the axon, down an electrochemical gradient, this depolarises the axon, if the influx of sodium ions reaches the threshold value of the axon then an action potential is produced. The sodium-voltage gated channels close when the potential of the axon reaches +40 mv. Potassium ion channels open, allowing K+ ions out of the axon and into surrounding tissue fluid. The electrical gradient is reversed and more potassium ions leave the axon. This is repolarisation. As more potassium ion channels are open compared to at resting potential, hyperpolarisation occurs. This is where the axon is more negative then usual. The sodium-potassium pump actively transports 3 Na+ ions out of the axon and 2K+ ions into the axon, with the use of ATP; allowing the resting potential to be reastablished.
What pumps in the cell membrane?
The sodium potassium pump is a form of active transport in which sodium and potassium end up switching places (one into the cell and one leaves the cell). The pump is located in the cell membrane.
Why are sodium bicarbonate and potassium abnormal in End Stage Renal Disease?
When you understand what happens to the body with ESRD, it will be very clear to you.
How do you determine the end point of titration involving sodium oxalate and potassium permanganate?
The end point of the titration is typically determined by observing a color change. In the case of sodium oxalate and potassium permanganate, the permanganate ion is a deep purple color, and it will turn colorless once it has reacted completely with the oxalate ion. This color change indicates the end point of the titration.
What is the difference between a nerve cell at the end of repolarization and a nerve cell in the resting state?
At the end of repolarization, a nerve cell has returned to a more negative internal membrane potential after depolarization, but the ion channels are still in the process of resetting. In contrast, in the resting state, the nerve cell has a stable resting membrane potential (typically around -70 mV) with closed voltage-gated channels and the sodium-potassium pump actively maintaining the concentration gradients of sodium and potassium ions. Essentially, the end of repolarization is a transitional phase, while the resting state is a stable condition.
Did Ionic compounds end in what suffix?
Ionic compounds typically end in "-ide" as a suffix for the anion component of the compound. For example, sodium chloride and potassium iodide are common ionic compounds.
Describe the interaction of acetylcholine and calcium ions in stimulating muscle contraction?
The acetylcholine diffuses across the synapse and binds to and activates nicotinic acetylcholine receptors on the motor end plate of the muscle cell. Activation of the nicotinic receptor opens its intrinsic sodium/potassium channel, causing sodium to rush in and potassium to trickle out.
What type of ion channel opening is caused by the binding of neurotransmitters to the receptors on the motor endplate?
Sodium enters the cell and causes depolarization. A small amount of potassium also leaves the motor end plate. This means binding of the neurotransmitter causes chemically gated sodium channels to open in the motor end plate.calcium
What characteristic electron configuration are shared by Lithum sodium Potassium and Rb?
Lithium, sodium, potassium, and rubidium all belong to Group 1 of the periodic table, known as the alkali metals. They all have one valence electron in their outer energy level, giving them similar electron configurations where the outer electron is in the s orbital. Specifically, their electron configurations end in s¹.
What regulates which substances enter and leave a cell?
The plasma membrane. Carrier proteins and ion channels are parts of the plasma membrane, and aid in diffusion across concentration gradients, as most things don't freely move from one end of the cell membrane to the other. The Sodium-Potassium pump is a major ion channel in the plasma membrane, and regulates the intake of potassium and export of sodium (3 molecules sodium out, 2 molecules potassium in.)
What happens when hydrochloric acid and sodium ethanoate are combined?
When hydrochloric acid and sodium ethanoate are combined, a chemical reaction occurs where hydrogen chloride gas is evolved. This reaction results in the formation of ethanoic acid and sodium chloride. The overall reaction is: CH3COONa + HCl → CH3COOH + NaCl.
What is in the cell membrane that can be opened or close?
There is more potassium inside the cell during a resting period...as an action potential occurs, the cell becomes depolarized, or in other words there is an influx of sodium, allowing the membrane to open. As the action potential comes to an end, the cell repolarizes, meaning the levels of sodium rush outside of the cell again, while the potassium flows back in. As another action potential takes place, this happens over again.
What is the difference between end suction pump and horizontal multi stage pump?
what is th different between end suction pump and singl stage pump and multistage pump
