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

Define fluid and electrolytes requirements in elderly, Define Fluid and Ele...

Define Fluid and Electrolytes requirements in elderly? Care lo be taken that adequate fluid be given to the elderly. If patient is unable to take the required daily needs, then

Pollen stigma interaction - stigma, Pollen Stigma Interaction - Stigma ...

Pollen Stigma Interaction - Stigma The Stigma After landing on the stigma pollen grain germinates, and produces a pollen tube that carries the male gametes. The stigma has bee

Explain the indirect methods of microbial estimation, Explain the Indirect ...

Explain the Indirect Methods of Microbial Estimation? Indirect methods, i.e., methods other than those counting the microbial cells can also be used for quantitation purpose. T

Popularity of chromatography - basic separation technique, Define Popularit...

Define Popularity of Chromatography - Basic Separation Technique? Chromatography is popular because: (a) minute quantities can be analysed qualitatively and quantitatively,

Describe the nutritional and functional role of manganese, Minerals :- Mang...

Minerals :- Manganese Food Source      Whole grains, fruits, vegetables Nutritional Functional role Essential nutrient: Deficiency extremely rare. Enzyme cofactor

Which kind of chemical bond maintains the pairing, Q. Which kind of chemica...

Q. Which kind of chemical bond maintains the pairing of each chain in the DNA molecule? To form the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds

Give an example of structural protein, Give an example of each of the follo...

Give an example of each of the following types of proteins: a. Enzyme b. Structural protein c. Motor protein

Health education to hospitalised child, Health Education to Hospitalised C...

Health Education to Hospitalised Child You have unique opportunity for teaching and reinforcing good hygienic care while the child is hospitalised. Clean hair, nails, clothin

Form of protozoan reproduction, Q. Which is the form of protozoan reproduct...

Q. Which is the form of protozoan reproduction that generates more variability? Sexual reproduction always generates extra genetic variability than asexual reproduction. That i

Explain wild-type fruitfly drosophila melanogaster, A cross among wild-type...

A cross among wild-type fruitfly Drosophila melanogaster  [normal bristles and grey body (s+s, e+ e)] with a mutant fly [short bristles and ebony body (ss ee)] produces following p

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