Question

An ion channel is a cell membrane channel that is selectively permeable to specific ions, such...

An ion channel is a cell membrane channel that is selectively permeable to specific ions, such as calcium, potassium, and sodium. There are different types of ion channels such as a potassium leak channel, which creates a negative charge inside of the cell, but can an ion channel be gated since it selects certain ions? And if yes, then how and what ways can it be gated?

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Voltage gated ion channels have been observed, where, there would be presence of transmembrane proteins that would be resulting in these ion channels. There would be an alteration of the potential of the membrane, which would be altering the confirmation of the protein channels, Rhys regulating the opening as well as closing of channels. Since, the cell membranes would be impermeable to one, diffusion would be taking place through protein channels. These channels would be specific to the ions. The closing and opening of the channels would be regulated by the change in ion concentration l these have been observed in case of potassium channels, sodium channels, chloride as well as calcium.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Which statement below best explains why ion movement through channels generates a membrane potential but ion...
Which statement below best explains why ion movement through channels generates a membrane potential but ion movement generated by the Na+/K+ pump does not? The concentration of K+ is higher inside the cell, while the concentration of Na+ is higher outside. The slow action of the pump creates a small change in the membrane potential. Ions move rapidly through ion channels, specialized pores in the membrane that allow ions to diffuse back and forth, carrying charge. The net movement of...
-The long plateau phase of the cardiac muscle action potential is due to increased membrane permeability...
-The long plateau phase of the cardiac muscle action potential is due to increased membrane permeability to potassium ion. increased membrane permeability to sodium ions. movement of fewer sodium ions across the cell membrane. decrease in the amount of calcium diffusing across the membrane. calcium channels remaining open.
Lorazepam is a positive allosteric modulator with high affinity for GABAA receptors, membrane bound, ligand-gated channel...
Lorazepam is a positive allosteric modulator with high affinity for GABAA receptors, membrane bound, ligand-gated channel permeable to chloride. Answer the following questions regarding the administration of lorazepam for the patient in this case study. a. Identify two membrane-bound proteins present that significantly influence the resting membrane potential of an excitable cell. For each, identify the ions transported and the type of membrane transport (active/passive). b. Describe how membrane-bound ligand-gated channels transiently alter membrane permeability to a particular ion, and...
best definition of action potential? A: a wave of electrical excitation that travels without signal weakening...
best definition of action potential? A: a wave of electrical excitation that travels without signal weakening B: passive spread of an electrical signal C: signal that travels only extremely short distances, from one ion channel to the next best definition of the resting membrane potential? A: steady-state condition in which there is no net change in electrical potential difference across a membrane B: membrane potential when a person is laying down, always lower because of changes in blood pressure C:...
During active transport in the neuron, the outside of the cell is _________________ and the inside...
During active transport in the neuron, the outside of the cell is _________________ and the inside is _______________. positive, negative more positive, less positive more negative, less negative negative, positive In active transport, _____________ provides the energy to move molecules against their concentration gradient. nucleus potassium sodium adenosine triphosphate ________________ proteins can change shape when moving substances across the membrane. Proteins that can be open or closed, based on different conditions, are called ___________. bypass proteins channel proteins selective proteins...
Please No Explanation just ANSWER A,b,c,etc! QUESTION 24 Fifty neurons release excitatory neurotransmitters onto the dendrites...
Please No Explanation just ANSWER A,b,c,etc! QUESTION 24 Fifty neurons release excitatory neurotransmitters onto the dendrites and body of neuron “A.” Neuron A reaches threshold and fires an action potential. This is an example of saltatory summation. continuous summation. spatial summation. temporal summation. Which of the following terms does not belong with the others? sodium IPSP excitatory depolarize 2 points    QUESTION 27 Which one of the following terms does not belong with the others? graded potential depolarizing phase action...
6. Ion channel gates close the pores of some ion channels in response to Select one:...
6. Ion channel gates close the pores of some ion channels in response to Select one: a. stretching of the cell membrane b. a change in electrical charge c. the binding of specific molecules to the channel d. All of the above 7. An atom that has gained or lost electrons is called a(n) Select one: a. molecule b. nucleon c. ion d. element Which of the following does not require energy? Select one: a. diffusion b. endocytosis c. active...
2. The portion of a nerve cell that conducts signals is called an axon. Many of...
2. The portion of a nerve cell that conducts signals is called an axon. Many of the electrical properties of axons are governed by ion channels, which are protein molecules that span the axon’s cell membrane. When open, each ion channel has a pore that is filled with fluid of low resistivity and connects the interior of the cell electrically to the medium outside the cell. In contrast, the lipid-rich cell membrane in which ion channels reside has very high...
Please select the best option for each part. Part A. The absolute refractory period of the...
Please select the best option for each part. Part A. The absolute refractory period of the action potential____________. (assume Temp = 37 degrees Celcius) a. determines the maximum frequency at which action potentials can be generated b. occurs because voltage-gated K+ channels have not recovered from inactivation c. does not occur in skeletal muscles d. occurs at the end of the afterhyperpolarization phase Part B. Two major components of an ion channel selectivity filter are _______ and _______. (assume Temp...
1. What is the resistance of a NichromeTM wire at 0.0 ∘C∘C if its resistance is...
1. What is the resistance of a NichromeTM wire at 0.0 ∘C∘C if its resistance is 106.9 ΩΩ at 12.5 ∘C∘C? The temperature coefficient of resistivity for NichromeTM is 4.00×10−4 (∘C)−1(∘C)−1 . Enter your answer with four significant figures. 2. A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 AA through the body at 30 VV for a very short time, usually about...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT