9. You are performing an experiment at with an artificial membrane (i.e not a living cell). You place a NaCl solution on each side of the membrane. You discover that if vou place a 10-fold NaCl concentration gradient across this membrane (higher NaCl concentration outside than inside) you initially see a +20 mV membrane potential develop. If the Cl permeability is assigned a value of 1, what value would you assign to the Na" permeability? Assume 2.3RT/F = 60 mV.

Q: 8. Equilibrium potential of different ions across the plasma membrane of a cell is calculated by the…

A: The saturation of the transient directional flow of charged ions at the cell membrane level is known…

Q: 1. When a neuron is not generating an action potential, its membrane (the neurolemma) has a resting…

A: Hi ! Thanks for posting the question. Since we are entitled to answer fist question, we’ll answer…

Q: 1) A drug was added to a cell with a resting membrane potential = -12mV. When added, the drug caused…

A: Note: As per the guidelines, we are answering the first question here. Please repost the other…

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A: Answer--

Q: 3. Compare the electrophysiology of two neurons, Neuron A and Neuron B. Neuron A has a greater…

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Q: a. How does the neuron re-establish its resting membrane potential after an action potential?…

A: Since you have asked multiple questions, we can only answer the first question. kindly repost the…

Q: 7. Assuming equivalent stimulation of the two pre-synaptic axons in the diagram below, in which of…

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Q: 3) You are investigating the ionic selectivity of an ion channel opened by activation of a specific…

A: A.                                   E(K+)= RTnFlnOUTIN=8.314×2981×96485ln5140=-0.089≈-89mV…

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A: The resting potential is the difference of electric charge between the inner and the surrounding…

Q: An action potential does occur in response to a _____ , which strong enough to depolarize the…

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Q: 14. The action potential in excitable cells is ‘activated’ when the cell membrane reaches the…

A: The action potential is a phenomenon of excitable cells such as nerve and muscle and consists of a…

Q: 3. For a typical mammalian cell, match the changes in the left column with the appropriate answer.…

A: Question - 3. For a typical mammalian cell, match the changes in the left column with the…

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Q: 15- the membrane potential if the [Na+] outside, inside = A. (+) B. (-) C. (+) D. (+)

A: Depolarization occurs when sodium ions enter inside the cell. This changes the membrane potential.

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A: Note- as we are allowed to do one question at a time. I can provide answer to the first question…

Q: is different fro

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A: Given

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Q: 2. Voltage gated Na+ channels have three state: open, closed and inactivated. Observe the following…

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Q: 3. Suppose you discover a chemical that can block leak potassium channels. What might happen as a…

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Q: 8. The resting potential of a neuron that is submerged in a solution with zero extracellular…

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Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.