At 37 °C the concentration of Fe3+ inside a cell is 0.099 M and outside is...
At 37 °C the concentration of Fe3+ inside a cell is 0.099 M and outside is 0.014 M. The cell membrane is permeable to Fe3+. What potential difference in volts would have to exist across the membrane for Fe3+ to be in equilibrium at the stated conditions? Give you answer as the absolute value of the potential difference in volts.
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At 37 °C the concentration of Fe3+ inside a cell is 0.099 M and
outside is...
At 37 °C the equilibrium concentration of Ca2+ inside a cell is 0.098 M and outside...
At 37 °C the equilibrium concentration of Ca2+ inside a cell is 0.098 M and outside is 0.019 M. The cell membrane is permeable to Ca2+ and Cl–. The only ion present in addition to Ca2+ and Cl– is a protein (Prin+/–) inside the cell. The protein holds a single positive or negative charge. The Cl– is at equilibrium across the membrane while the protein is inside the cell and cannot permeate the membrane. What is the concentration of Prin+/–...
At 37 °C the equilibrium concentration of Ca2+ inside a cell is 0.067 M and outside...
At 37 °C the equilibrium concentration of Ca2+ inside a cell is 0.067 M and outside is 0.034 M. The cell membrane is permeable to Ca2+ and Cl–. The only ion present in addition to Ca2+ and Cl– is a protein (Prin+/–) inside the cell. The protein holds a single positive or negative charge. The Cl– is at equilibrium across the membrane while the protein is inside the cell and cannot permeate the membrane. What is the concentration of Prin+/–...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00380 M inside the cell, and a concentration of 0.145 M outside t...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00380 M inside the cell, and a concentration of 0.145 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 310 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow. (answer in mV) Answer: 696.77 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00300 M inside the cell, and a concentration of 0.115 M outside t...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00300 M inside the cell, and a concentration of 0.115 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 300 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow (answer in mV) Answer 04684 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
Problem 10.11 - Enhanced - with Solution membrane at 37° C, with a NaCl concentration of...
Problem 10.11 - Enhanced - with Solution membrane at 37° C, with a NaCl concentration of 0.10 M on the right and 0.01 M on the left, given the following conditions. The equilibrium membrane potentials to be expected across Membrane permeable only to Nat: Ah= +0.0615 V L0 0615 V Membrane equally permeable to both ions: Ab0 V Part A Will any appreciable transport f material take place in establishing the membrane potential? Briefly explain each answer. Match the items...
12. At equilibrium the Na+ concentrations are 100 mM outside and 10 mM inside the cell,...
12. At equilibrium the Na+ concentrations are 100 mM outside and 10 mM inside the cell, what is the voltage difference across the membrane?
The fluids inside and outside a cell are good conductors separated by the cell wall, which...
The fluids inside and outside a cell are good conductors separated by the cell wall, which is a dielectric. Thus the cell has capacitance; charge may be stored on its inner and outer surfaces (see the figure below). It is a good approximation to treat the thin charged layer as a parallel-plate capacitor. Typically the wall is 9.50 x 10-9 m thick and has a dielectric constant of 5.00. (everybody's responses to this question before were incorrect so I need...
The equilibrium membrane potentials to be expected across a membrane at 37 ∘ C, with a...
The equilibrium membrane potentials to be expected across a
membrane at 37 ∘ C, with a NaCl concentration of 0.10 M on the
right and 0.01 M on the left, given the following conditions.
Membrane permeable only to Na+: Δψ = +0.0615 V.
Membrane permeable only to Cl−: Δψ = −0.0615 V.
Membrane equally permeable to both ions: Δψ = 0 V.
Will any appreciable transport of material take place in
establishing the membrane potential? Briefly explain each
answer.
Match...
The osteoclast proton pump acidifies the outside of the cell to pH3 from a pH value...
The osteoclast proton pump acidifies the outside of the cell to pH3 from a pH value inside the cell of 7. The potential across the osteoclast plasma membrane is 60mV (inside more negative). Given intracellular concentrations of ADP = 1mM and phosphate = 0.5 mM, what ATP concentration is necessary to drive the transport of two moles of protons outside the cell per mole of ATP hydrolyzed? The temperature is 37°C, and the standard free energy change for ATP hydrolysis...
The concentration of potassium ions inside a nerve cell is around 25 times that outside the...
The concentration of potassium ions inside a nerve cell is around 25 times that outside the cell. Calculate the potential difference between inside and outside a nerve cell, if it depends only on this ionic imbalance. For simplicity, pretend that the temperature = 25°C (standard) even though body temperature is higher than that. (10 marks)
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00380 M inside the cell, and a concentration of 0.145 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 310 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow. (answer in mV) Answer: 696.77 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00300 M inside the cell, and a concentration of 0.115 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 300 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow (answer in mV) Answer 04684 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
Problem 10.11 - Enhanced - with Solution membrane at 37° C, with a NaCl concentration of 0.10 M on the right and 0.01 M on the left, given the following conditions. The equilibrium membrane potentials to be expected across Membrane permeable only to Nat: Ah= +0.0615 V L0 0615 V Membrane equally permeable to both ions: Ab0 V Part A Will any appreciable transport f material take place in establishing the membrane potential? Briefly explain each answer. Match the items...
The equilibrium membrane potentials to be expected across a
membrane at 37 ∘ C, with a NaCl concentration of 0.10 M on the
right and 0.01 M on the left, given the following conditions.
Membrane permeable only to Na+: Δψ = +0.0615 V.
Membrane permeable only to Cl−: Δψ = −0.0615 V.
Membrane equally permeable to both ions: Δψ = 0 V.
Will any appreciable transport of material take place in
establishing the membrane potential? Briefly explain each
answer.
Match...
The concentration of potassium ions inside a nerve cell is around 25 times that outside the cell. Calculate the potential difference between inside and outside a nerve cell, if it depends only on this ionic imbalance. For simplicity, pretend that the temperature = 25°C (standard) even though body temperature is higher than that. (10 marks)
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