Calculate free energy (ΔG) for transporting 3 moles of Ca2+ from inside to outside of a typical cell. (Using Ca2+ = 1.5mM for outside the cell; [Ca2+] = 0.1 µM for inside the cell; T = 298k; R = 1.987x10^3 kcal/mol/deg; membrane potential (ΔV) = -50 mV (inside negative); Faraday constant = 23.1 kcal/V/mol).


Calculate free energy (ΔG) for transporting 3 moles of Ca2+ from inside to outside of a...
1) Calculate the free energy required to move 1 mol of K+ ions from the outside of the cell (where [K+] = 3.1 mM) to the inside (where [K+] = 135 mM) when the membrane potential is -78 mV and the temperature is 34.2°C. Give your answer in kJ/mol. 2) Calculate the rate enhancement that could be accomplished by an enzyme forming one low-barrier hydrogen bond that has a free energy of -45 kJ/mol with its transition state at 31°C.
Free-energy change, ΔG∘, is related to cell potential, E∘, by the equation ΔG∘=−nFE∘ where n is the number of moles of electrons transferred and F=96,500C/(mol e−) is the Faraday constant. When E∘ is measured in volts, ΔG∘ must be in joules since 1 J=1 C⋅V. Calculate the standard cell potential at 25 ∘C for the reaction X(s)+2Y+(aq)→X2+(aq)+2Y(s) where ΔH∘ = -679 kJ and ΔS∘ = -195 J/K .
A cell biologist interested in the transport of calcium ions (Ca2+) across the plasma membrane of bacterial cells made the following measurements on bacterial cells at 25°C: Vm = -150 mV [Ca2+] outside = 20 mM [C a2+] inside = 0.4 mM Constants: R = 1.987 cal/mol degree; T = Temperature in Kelvin (273+ °C) , F=23062 cal/mol volt, z=charge of the molecule, Vm =membrane potential in V. Note: ∆Ginwards = +RTln([in]/[out]) + zFVm 94. What is the free energy...
(a) For the following conditions, calculate the change in the Gibbs energy associated with transporting 1 mole of sodium ions from inside to outside the cell. Is work required or produced? Outside: [Na+] = 130 mM [K+] 5 mM Electrical potential = 0 mV [Na+]= [K 110 mM Electrical potential =-70 mV Temperature 25 °C Inside: 10 mM (b) For the same conditions, calculate the change in the Gibbs energy associated with transporting 1 mole of potassium ions from outside...
Question 1 (1 point) What is the deltaG for transporting 2 moles of Cl- from the inside of a parietal cell to the stomach cavity, when the (Cl-) inside the cell = 250 uM and Cl-) in the stomach cavity = 0.15mM? Assume membrane potential is -60mV (inside negative). 0-14.21 kJ 14.21 kJ 0-7.11 kJ O-7.11 kJ/mol
Potassium ions (K+) move across a 7.0-nm- thick cell membrane from the inside to the outside. The potential inside the cell is −80.0 mV, and the potential outside is zero. What is the change in the electrical potential energy Δ? electric of the potassium ions as they move across the membrane?
Chapter 10, Problem 04 Calculate the free energy required to move 1 mol of K+ ions from the outside of the cell (where [K+] = 3.1 mm) to the inside (where [K+] = 134 mm) when the membrane potential is -77 mV and the temperature is 34.3°C. Give your answer in kJ/mol.
Chapter 10, Problem 04 Calculate the free energy required to move 1 mol of K+ ions from the outside of the cell (where [K+] = 3.2 mm) to the inside (where [K+] = 147 mM) when the membrane potential is -77 mV and the temperature is 37.6°C. Give your answer in kJ/mol. kJ/mol the tolerance is +/-2%
Potassium ions (K+)(K+) move across a 9.0-nm-9.0-nm-thick cell membrane from the inside to the outside. The potential inside the cell is −60.0 mV,−60.0 mV, and the potential outside is zero. What is the change in the electrical potential energy Δ? electricΔU electric of the potassium ions as they move across the membrane? Δ? electric = ... J?
Some cell membranes in the human body have a layer of negative charge on the inside surface and a layer of positive charge of equal magnitude on the outside surface. Suppose that the charge density on either surface is ± 0.50×10−3 C/m2, the cell membrane is 5.00 nm thick, and the cell membrane is made up of tissue with a dielectric constant of 5.40. A) Find the magnitude of E in the membrane between the two layers of charge. E=?...