What is neurotransmitter, Biology

Assignment Help:

What is neurotransmitter

Consider Neuron B in the frog central nervous system whose plasma membrane has a previously unknown channel that is selectively conductive to a newly discovered divalent cation named DIVCAT with a valence of +2.  The threshold for an action potential in Neuron B is -55 millivolts and the resting potential for Neuron B is -70 millivolts.  The DIVCAT channel in Neuron B is part of an ionotropic receptor with an extracellular binding site for the newly discovered ligand LGD.  When LGD binds to its binding site, there is an increase in the DIVCAT conductance of Neuron B.  Neuron A synapses onto Neuron B.  Neuron A's neurotransmitter is LGD.

A. The intracellular concentration of DIVCAT is 1000 times greater than theextracellular concentration of DIVCAT. In response to an action potential in Neuron A, there will be: a decrease in the membrane voltage of Neuron B; an increase in the amount of intracellular DIVCAT in Neuron B; and an inhibitory postsynaptic potential in Neuron B.

B. The intracellular concentration of DIVCAT is 100 times greater than the extracellular concentration of DIVCAT. In response to an action potential in Neuron A, there will be: an increase in the membrane voltage of Neuron B; an increase in the amount of intracellular DIVCAT in Neuron B; and an inhibitory postsynaptic potential in Neuron B.

C. The intracellular concentration of DIVCAT is 10 times greater than the extracellular concentration of DIVCAT. In response to an action potential in Neuron A, there will be: an increase in the membrane voltage of Neuron B; a decrease in the amount of intracellular DIVCAT in Neuron B; and an excitatory postsynaptic potential in Neuron B

 


Related Discussions:- What is neurotransmitter

How does the poison cyanide act upon the aerobic respiration, Q. How does t...

Q. How does the poison cyanide act upon the aerobic respiration? Cyanide is a poison that restrains the last cytochrome of the respiratory chain, interrupting the ATP formation

Inter-relationships of classification, Inter-relationships of Classificatio...

Inter-relationships of Classification The aim of classification is to put together organisms on the basis of their similarities. But the question is what type of similarities?

Why should posterior wall preffered during surgery, Why should Posterior wa...

Why should Posterior wall preffered during surgery Posterior wall should not be perforated during surgery. This limits bleeding from the pterygoid plexus or branches of the max

What are age pyramids, What are age pyramids? Age pyramids are graphica...

What are age pyramids? Age pyramids are graphical representations in form of superposed rectangles every representing the number of individuals contained in age ranges into whi

Define two major aspects of nutrition economics, Define two major aspects o...

Define two major aspects of nutrition economics? There are two major aspects of nutrition economics. These aspects are: 1) Quantities of food commodities and their developme

Factors associated with accident, Factors Associated With Accident Co...

Factors Associated With Accident Cost in Administrative Functions Loss of prestige. Costs for notification, investigation and legal action. Loss of pu

To which direction does the growth of one side of a stem, To which directio...

To which direction does the growth of one side of a stem, branch or root induce the structure to curve? While one side of a stem, branch or root grows more than the other side

How are water and mineral salts tranport in the plant, How are water, miner...

How are water, mineral salts and food (sugar) transported throughout the plant? Water, mineral salts and sugar are transported throughout the plant through conductive vessels f

Regulation of fatty acid, The main point of control of β-oxidation is the a...

The main point of control of β-oxidation is the availability of fatty acids.  The major  source   of  free  fatty   acids   in  the  blood   is  from   the  breakdown   of triacylg

Main phases and clinical manifestations of schistosomiasis, Q. What are the...

Q. What are the main phases and clinical manifestations of schistosomiasis? The Schistosomiasis has acute and chronic phases and Days after the infection the cercarial dermatit

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