Two scientists calculated the membrane potential of a neuron using two different equations, the Nernst equation and the Goldman equation. Their calculations gave them slightly different predictions. What is the most likely reason for this difference? The lipid compositions of the cell membranes that the scientists studied were different. The scientists placed their measuring electrodes in slightly different positions. The temperatures of the fluid surrounding the cell membranes were different. The numbers of ions considered in the calculations were different. The scientists measured different numbers of cells.

Q: A hypothetical cell has a higher concentration of sodium ions outside the cell than inside the cell…

A: A solution is said to be a homogeneous mixture of two or more components in any one phase(solid,…

Q: The resting membrane potential of a cell is the consequence of which of the following concentrations…

A: Introduction - The voltage across a cell membrane during its resting state is called the resting…

Q: The cell bodies of neurons controlling your feet are actually located in your spine. The cell body…

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Q: Initially, the solution in side A, with respect to that in side B, is what?   After the system…

A: Introduction Water potential is the measure of the tendency of water to move from one to another…

Q: In the experiment showing osmosis through a semipermeable membrane, 3 corn syrup mixtures are used.…

A: Osmosis is the movement of water from its region of higher concentration to its region of low…

Q: Which statement best describes the Nernst equation? It relates the equilibrium potentials of…

A: Certainly! The Nernst equation, a basic idea in the study of cell physiology and electrochemistry,…

Q: in its cell membrane has been added to a solution that contains 0.5 M glucose and 2.8 M NaCl. The…

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A: Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane…

Q: Imagine that a neuron has 5X higher sodium outside than inside and 10X higher potassium inside than…

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Q: iven the perfect osmometer (plasma membrane bounded by perfectly rigid walls) inside the cell, the…

A: the approximate value of the solute potential is - 0.15MPa  and   pressure potential -0.15MPa. As…

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A: Introduction :  The voltage difference across the cell membrane at rest is known as the resting…

Q: If Ec=-70mV, and the membrane depolarises slightly to -60mV, how will Cl behave? O It will leak into…

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Q: When two chambers are separated by a membrane permeable to water but not solute, if water is free to…

A: Introduction A solution is a homogeneous mixture of two or more substances. It may exist in any…

Q: If the intracellular concentration of sodium ions in a cell is 5 mM and the extracellular…

A: The biological membrane is made up of lipids such as phospholipids, sphingolipids, cholesterol, and…

Q: The resting potential of most cells is most dependent concentration gradient of: on the…

A: Answer - potassium The resting potential membrane is determined by  Potassium-ion gradient.

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Q: The resting membrane potential of a typical animal cell is about –70 mV, and the thickness of a…

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Q: Explain, how and why the cells swell up (or even burst) if their Na/K pumps stop working.

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Q: which of the following method(s) will give you the correct final concentration of dye?

A: Answer is D. only methods 1 and 4 are accurate.

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Q: Using the graph, you would need an EPSP of ________mv to get an AP every 6ms.

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Q: When a cell membrane potential shifts from -70mV to -90mV we say the membrane has:

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A: Dear student, as per our honour code, We are authorized to answer one question at a time, since you…

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Q: After thinking about it you realise that there must be some information that is incorrect or missing…

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Q: How is the cell membrane like a battery?

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A: A neuron's purpose is to turn the message received from the external environment into an electrical…

Q: Which of the following statements is false regarding the directions that forces of the…

A: The polarised neuron is called resting potential.

Q: On a graph, draw what will happen to the resting membrane potential of the cell

A: The resting membrane potential is the potential difference across the intra and extra cellular…

Q: Do you think there are concentration gradients? If so, for which ions are there concentration…

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Q: Statement 1: Downhill transport of large, polar molecules and ions, called facilitated diffusion,…

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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.