Imagine being on the TV show Survivor of the Smartest and you are stuck on an island with only a few tools. You are given a bow, 1 arrow, and two vials. One is labeled ‘Na Pump antagonist’ and the other is labeled ‘Na Channel agonist’. The arrows are to capture food, of course. You are an average shot! What will you coat the arrow tips with and why? Please, if you are not a meat eater then pretend that you can trade the meat for a bean burrito!

Imagine being on the TV show Survivor of the Smartest and you are stuck on an island with only a few tools. You are given a bow, 1 arrow, and two vials. One is labeled ‘Na Pump antagonist’ and the other is labeled ‘Na Channel agonist’. The arrows are to capture food, of course. You are an average shot! What will you coat the arrow tips with and why? Please, if you are not a meat eater then pretend that you can trade the meat for a bean burrito!

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter39: Information Flow And The Neuron

Section: Chapter Questions

Problem 1TYK

See similar textbooks

Similar questions

For each phase, again, name the phase. Then draw in the figures below: Na+ and K+ channels. Draw them open or closed as appropriate. Where Na+ and K+ ions are located If Na+ or K+ are moving, draw the direction that they move. Make sure they move through their appropriate ion channel.
A student is eating at the lab bench (a clear violation of lab policies) and mistakenly sprinkles tetrodotoxin on his fries. Explain the origin of the toxin and its normal function in that animal. Given that this substance inhibits voltage-gated sodium channels, indicate whether each of the statements below are true or false. Explain your answers. Explain the time course of the response. It will be more difficult for the student’s neurons to generate action potentials The student’s neurons will fire more frequently because membrane potential will be brough closer to threshold. The effect on the membrane potential o the student’s neurons could be predicted by the Nernst equation, which factors in the effects of both ion concentration and ion permeability.
Which of the following statements about voltage gated channels is true? Voltage-gated sodium channels open at a higher (more positive) membrane potential than do potassium-gated channels Voltage-gated sodium channels open at a lower (more negative) membrane potential than do potassium-gated channels Sodium- and postassium-gated channels open at about the same membrane potential, but they have different effects because there are different numbers of the two kinds of channels in neuron cell membranes
Which of the following statements best describes the features of voltage-gated K+ channels? They consist of 4 subunits, are activated at the same time as voltage-gated Na+ channels, but do not inactivate. They consist of 4 subunits, are activated by depolarisation and close slowly during the refractory period. They have 24 membrane spanning alpha helices, 4 of which have positively charged amino acids which promote a conformational change in the channel following depolarisation. They consist of 4 subunits and are open at rest which causes the resting membrane potential to be close to the K+ equilibrium potential.
Give me an example of a voltage gated ion in action in the body.
The top panel (a) of this figure shows the graded potential change (far right, upper, electrical trace) that results from ligand binding to the ligand gated Na+ channel. The bottom panel of this figure (b) shows a graded potential change (far right, lower, electrical trace) that results from ligand binding to a ligand gated Cl- channel. From this trace you know (Vm = -70 mV) 1. ECl- is -70 mV 2. ECl- is more negative than -70 mV (i.e., -80 mV) 3. ECl- is more positive than -70 mV (i.e., -60 mV)
Grasshopper mouse lives in the desert of Arizona where there are scorpions whosevenoms are toxic by activating neuronal Nav channels or impair channel inactivation,thereby increasing neuron excitability causing pain/or paralysis. Interestingly, thegrasshopper mouse (Onychomys torridus) kills and consumes bark scorpions whileshowing little signs of discomfort when stung by the scorpion. On the other hand regularmouse is affected severely by the scorpion stung. What could be the molecular reason forthat adaptation
If K+ channels are blocked by TEA (tetraethyl ammonium), what happens to the equilibrium potential for K+? Becomes more positive Becomes more negative Does not change
Fill in the blank: Salt receptors are mainly stimulated by ionized inorganic _______________________.
Drugs bind to receptor and give response to the body. What type of binding involve in this process ?
Which of the following ion channels are always electrosensitive? stress-activated channels ligand-gated channels with extracellular ligands voltage-gated channels ligand-gated channels with intracellular ligands all of the above
What will be the receptor probability of the active state after you add a high dose of an antagonist?