Illustrate nernst equilibrium potential for potassium ions, Biology

Assignment Help:

Illustrate Nernst equilibrium potential for potassium ions

A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM.  The neuron is healthy.  At 2 AM, the physiological saline bathing the neuron is removed and replaced with a modified physiological saline.  The composition of the modified physiological saline is as follows: its potassium concentration is the same as the intracellular potassium concentration of the motor neuron; its sodium concentration is the same as the intracellular sodium concentration of the motor neuron; its total concentration of solutes (osmolarity) is the same as normal physiological  saline. The modified physiological saline also contains molecules that block the flux of ions viathe sodium-potassium primary active transport pump.  At 2:05 AM, the neuron is at rest and its membrane voltage is equal to the Nernst equilibrium potential for potassium ions at 2:05 AM.  At 2:06 AM,

A. the value of the Nernst equilibrium potential for sodium ions for the neuron is less than +10 millivolts.

B. an increase in potassium conductance will lead to no change in the membrane voltage.

C. an increase in sodium conductance will lead to a decrease in the amount of intracellular sodium

 


Related Discussions:- Illustrate nernst equilibrium potential for potassium ions

Zoology, structural adaptation of mammalian alimentary canal

structural adaptation of mammalian alimentary canal

Example of trial balance columns, Q. Example of Trial Balance columns? ...

Q. Example of Trial Balance columns? Start by extending all of Micro Train's revenue and expense account balances in the Adjusted Trial Balance columns to the Income Statement

What is atrial extrasystoles, Q. What is Atrial Extrasystoles? Atrial p...

Q. What is Atrial Extrasystoles? Atrial premature beats often occur at lower workloads and have little significance. As exercise increases, they usually subside and may then re

Enumerate the major substrates for gluconeogenesis, Enumerate the major sub...

Enumerate the major substrates for gluconeogenesis The major substrates for gluconeogenesis are the glucogenic amino acids, lactate  glycerol and (important  in ruminant) propi

Illustrate the aqueous phase in sol processing, Illustrate the aqueous phas...

Illustrate the aqueous phase in sol processing In a sol possessing a continuous aqueous phase, the colloidal particles have an electrically charged surface.  The ionized groups

Use recombinant dna technology, name two examples of biotechnology that use...

name two examples of biotechnology that use recombinant DNA technology and two examples that do nnot

When the blood level of estrogen is high, Birth control pills maintain a hi...

Birth control pills maintain a high blood level of estrogen and progesterone. What is happening in the ovary when the blood level of estrogen is high? How is the uterus responding?

Explain minerals requirement during thyphoid, Explain Minerals requirement ...

Explain Minerals requirement during thyphoid Minerals:   Loss of electrolytes and water is observed due to diarrhoea. Thus liberalizing on sodium intake  through salty soups,

Define the term - acoelomate, Define the term - Acoelomate Triploblasti...

Define the term - Acoelomate Triploblastic animals which do not have an internal body cavity. This includes flatworms and ribbon worms. However the term could be applied to oth

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd