{"id":165058,"date":"2024-11-11T07:10:17","date_gmt":"2024-11-11T07:10:17","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=165058"},"modified":"2024-11-11T07:10:19","modified_gmt":"2024-11-11T07:10:19","slug":"given-these-parameters-what-is-the-%ce%b4g-for-k-ion-transport-into-the-frog-muscle-cell-in-the-presence-of-ach","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/11\/11\/given-these-parameters-what-is-the-%ce%b4g-for-k-ion-transport-into-the-frog-muscle-cell-in-the-presence-of-ach\/","title":{"rendered":"Given these parameters, what is the \u0394G for K+ ion transport into the frog muscle cell in the presence of Ach"},"content":{"rendered":"\n

Given these parameters, what is the \u0394G for K+ ion transport into the frog muscle cell in the presence of Ach? \u0394G = _<\/em> kJ\/mol
Dr. Knowsalot smiles and nods. “Good,” she says. “Now let’s see whether K+ ions pass through the open Ach receptors into the cell. As you might remember, these channels are permeable to Na, K+, and Ca\u00b2+. For a typical frog muscle cell, the concentration of K+ is roughly 124 mM inside the cell and 2.30 mM outside the cell.” Remember, to calculate \u0394G for an ion, you simply add the equations for the chemical and electrostatic components together. \u0394G = RT in (C2\/C1) + ZFVm. As mentioned earlier, a typical animal cell resting membrane potential is \u201360 mV, and this process occurs at body temperature, which is 310 K.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

To calculate the change in Gibbs free energy (\u0394G) for the transport of K\u207a ions into the frog muscle cell in the presence of acetylcholine (Ach), we will use the formula:<\/p>\n\n\n\n

[
\\Delta G = RT \\ln\\left(\\frac{C_2}{C_1}\\right) + ZFV_m
]<\/p>\n\n\n\n

Where:<\/p>\n\n\n\n