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

Explain about health economics and economics of malnutrition, Explain about...

Explain about the Health Economics and Economics of Malnutrition? In the earlier units on nutritional problems, we learnt that there are many causes of malnutrition, socioecono

Movement of body parts, MOVEMENT OF BODY PARTS - Movement of appenda...

MOVEMENT OF BODY PARTS - Movement of appendages bring about locomotion. Perapodia, setae in Annelida, jointed legs in Arthropoda, flat foot in mollusca, tube feat in sta

Explain herbals of brunfels, Explain Herbals of Brunfels? Between the y...

Explain Herbals of Brunfels? Between the years 1530 and 1536 Otto Brunfelsius (Brunfels) (1463-1534) published his 'Herbal' which consisted of descriptions of a large number of

Determine effective half life and value of effective decay, 1. By direct me...

1. By direct measurement of the activity of the thyroid gland in several patients who had received 131 I for diagnostic purposes, it was observed that the biological elimination h

Embryonic membranes, EMBRYONI C MEMBRANES - Such animals are called a...

EMBRYONI C MEMBRANES - Such animals are called amniota. Embronic membranes are of 4 types - (i) Yolk sac - It is formed below the embryo. It contains fluid (no yolk

Alzheimer’s disease research paper, Alzheimer's  disease -  a  devastating ...

Alzheimer's  disease -  a  devastating  brain  disease  which  gradually  ruins  the  ,  thinking  skills,  patient's  memory and  ultimately  the  ability  to  perform  the  simpl

What are the major morphological features of arthropods, Q What are the maj...

Q What are the major morphological features of arthropods? Arthropods present three distinguishing features: they are metameric beings (segmented body), they present articulate

Studying leaf arrangements, Studying leaf arrangements Observe as many ...

Studying leaf arrangements Observe as many growing plants as possible by looking down on them from above. Draw sketches of the dissimilar patterns of leaf arrangement.

Zoology , canal system in porifera

canal system in porifera

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