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

Monosaccharides and disaccharides, Monosaccharides are frequently known as...

Monosaccharides are frequently known as single or simple sugars and are the easiest of all carbohydrates. That is the building blocks of all higher carbohydrates. The Monosacchari

Species diversity, Species Diversity Species diversity means the differe...

Species Diversity Species diversity means the differences between species (both domesticate d and wild). It is the most visible component of biodiversity as implied by the word

Explain environmental sampling - methods and techniques, Explain Environmen...

Explain Environmental Sampling - Methods and Techniques? Environmental sampling can be done for total microbial load or for some specific pathogens or spoilage organisms. The m

Equal concentration throughout a container or cell, If molecules diffuse do...

If molecules diffuse down their concentration gradient and achieve equal concentration throughout a container or cell, does all movement stop? Explain your answer.

Endocytosis and exocytosis, Endocytosis and Exocytosis Endocytosis is the...

Endocytosis and Exocytosis Endocytosis is the process by which substances are brought into the cell from outside by formation of membrane bound vesicles. These extra cellular sub

Show major signs of diabetes, Q. What are the three major signs of diabetes...

Q. What are the three major signs of diabetes? The three major signs of diabetes mellitus are known as the diabetic triad- polydipsia, polyuria and polyphagia. Polyuria is t

Explain the primary function of blood, Explain the primary function of bloo...

Explain the primary function of blood? The primary function of the blood to transport oxygen from the lungs to body tissues for interior respiration. The blood helps in maintai

Phylum coelenterata, what is the food getting habits of phylum coelenterata...

what is the food getting habits of phylum coelenterata?

Classification of coal by rank, Coal can be classified into following categ...

Coal can be classified into following categories in the order of rank. Peat:  peat is a brown and fibrous mass. It is the first stage of coalification. It is not used as

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