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+/– (in M)?
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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 0.067 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...
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...
Calculate the equilibrium membrane potentials to be expected across a membrane at 37 ∘C, with a...
Calculate 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. Consider the process is spontaneous. Part A Membrane permeable only to Na+. Express your answer to three significant figures and include the appropriate units. Δψ = Part B State which side is positive (+) Part C Membrane permeable only to Cl−. Express your answer to three...
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?
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...
(1) Mitochondria regulate the concentration of calcium ions in the cytoplasm, by allowing the ions to equilibrate across...
(1) Mitochondria regulate the concentration of calcium ions in the cytoplasm, by allowing the ions to equilibrate across the mitochondrial membrane. If the mitochondrion has a membrane potential of –150 mV relative to the cytoplasm, and the cytoplasmic concentration of Ca2+ is 1 μM, what is the mitochondrial Ca2+ concentration? Assume a temperature of 37 C. (2) The membrane calcium pump of the malarial parasite Trypanosoma cruzipumps out calcium ions from the parasite cell interior, hydrolyzing one molecule of ATP...
Pu010 2. You are studying a bacterial protein, Pmp 7, that pumps one potassium (Kt) ion...
Pu010 2. You are studying a bacterial protein, Pmp 7, that pumps one potassium (Kt) ion into the cell for each calcium ion (Ca²+) that is moved out of the cell. Pmp 7 uses energy from light to pump these ions across the membrane. Experiment 1: You make an artificial membrane vesicle that has Pmp7 as the only protein on the membrane. Pmp 7 is orientated on this artificial membrane vesicle as it is oriented in a bacterial cell, and...
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...
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...
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...
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...
Pu010 2. You are studying a bacterial protein, Pmp 7, that pumps one potassium (Kt) ion into the cell for each calcium ion (Ca²+) that is moved out of the cell. Pmp 7 uses energy from light to pump these ions across the membrane. Experiment 1: You make an artificial membrane vesicle that has Pmp7 as the only protein on the membrane. Pmp 7 is orientated on this artificial membrane vesicle as it is oriented in a bacterial cell, and...
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