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L o Gromatic in cromatic room Membrane Transport Calculate the amount of energy available from or...
The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na...
The Na –glucose symport system of
intestinal epithelial cells couples the \"downhill\" transport of
two Na ions into the cell to the \"uphill\" transport of glucose,
pumping glucose into the cell against its concentration gradient.
If the Na concentration outside the cell ([Na ]out) is 155 mM and
that inside the cell ([Na ]in) is 17.0 mM, and the cell potential
is -53.0 mV (inside negative), calculate the maximum ratio of
[glucose]in to [glucose]out that could theoretically be produced if...
The Nat-glucose symport system of intestinal epithelial cells couples the "downhill" transport of two Nat ions...
The Nat-glucose symport system of intestinal epithelial cells couples the "downhill" transport of two Nat ions into the cell to the "uphill" transport of glucose, pumping glucose into the cell against its concentration gradient. If the Na concentration outside the cell (Na lout) is 153 mM and that inside the cell ([Nalinis 19.0 mm, and the cell potential is -53.0 mV (inside negative), calculate the maximum ratio of (glucoseJin to (glucoseJout that could theoretically be produced if the energy coupling...
(a) For the following conditions, calculate the change in the Gibbs energy associated with transporting 1...
(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...
Science
the resting membrane potential of a neuron at 25°c is -70mv. if the free energy change associated with the transport of one Na+ ion from outside to inside is -20.57kg/mol and Na+ outside the cell is 100mM what is Na+ inside the cell? Give your answer in mM with up two decimal points
Consider the transport of K+ from the blood (where its concentration is about 4 mM) into...
Consider the transport of K+ from the blood (where its concentration is about 4 mM) into an erythrocyte that contains 150 mM K+. The transmembrane potential is about 60 mV, inside negative relative to outside. The free-energy change for this transport process is: (These values may be of use to you: R = 8.315 J/mol.K; T = 298 K; 9 (Faraday constant) = 96,480 J/V; N = 6.022 × 1023/mol.)
1. Animal cells have a Na,K pump that couples the energy of ATP hydrolysis to transport 3 Na ions out of the cell and 2 K ions into the cell. Inside astrocytes, the concentration of Na is 20 mM and th...
1. Animal cells have a Na,K pump that couples the energy of ATP hydrolysis to transport 3 Na ions out of the cell and 2 K ions into the cell. Inside astrocytes, the concentration of Na is 20 mM and the concentration of K is 130 mM. The extracellular concentrations of Na and K are 145 mM and 5 mM, respectively. Calculate the energy required for the transport of Na and K , with this stoichiometry; assume that the cell...
You create an artificial vesicle containing a transport protein in its membrane. The transport protein uses...
You create an artificial vesicle containing a transport protein in its membrane. The transport protein uses ATP to pump one Mg2+ ion into the cell for every Na+ ion it pumps out. At the starting point of the experiment, the concentration of Mg2+, Na+, and ATP are the same inside and outside the vesicle. a) After 1 hour, which ion(s) will be at a higher concentration inside the vesicle? b) After 1 hour, which ion(s) will be...
5/2400 Resources Give Up Hint Intestinal epithelial cells pump glucose into the cell against its concentration grad...
5/2400 Resources Give Up Hint Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Nat-glucose symporter. Recall that the Nat concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Nations into the cell to the "uphill" transport of glucose into the cell. If the Na+ concentration outside the cell (INa1.) is 151 mM and that inside the cell ([Na]) is 23.0 mm, and the cell...
The transport of Na+ ions across a membrane, from a region where the concentration is 1 μM to a region where it is 100 μM, is coupled to the hydrolysis of ATP. Transport is opposed by a membrane poten...
The transport of Na+ ions across a membrane, from a region where the concentration is 1 μM to a region where it is 100 μM, is coupled to the hydrolysis of ATP. Transport is opposed by a membrane potential of 70 mV. Assuming energy coupling is 100% efficient, the hydrolysis of 1 mole of ATP can drive the transport of how many moles of Na+ at 37˚C if the ΔG for ATP hydrolysis is -53.4 kJ/mol under intracellular conditions?
Calculate free energy (ΔG) for transporting 3 moles of Ca2+ from inside to outside of a...
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).
The Na –glucose symport system of
intestinal epithelial cells couples the \"downhill\" transport of
two Na ions into the cell to the \"uphill\" transport of glucose,
pumping glucose into the cell against its concentration gradient.
If the Na concentration outside the cell ([Na ]out) is 155 mM and
that inside the cell ([Na ]in) is 17.0 mM, and the cell potential
is -53.0 mV (inside negative), calculate the maximum ratio of
[glucose]in to [glucose]out that could theoretically be produced if...
The Nat-glucose symport system of intestinal epithelial cells couples the "downhill" transport of two Nat ions into the cell to the "uphill" transport of glucose, pumping glucose into the cell against its concentration gradient. If the Na concentration outside the cell (Na lout) is 153 mM and that inside the cell ([Nalinis 19.0 mm, and the cell potential is -53.0 mV (inside negative), calculate the maximum ratio of (glucoseJin to (glucoseJout that could theoretically be produced if the energy coupling...
(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...
5/2400 Resources Give Up Hint Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Nat-glucose symporter. Recall that the Nat concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Nations into the cell to the "uphill" transport of glucose into the cell. If the Na+ concentration outside the cell (INa1.) is 151 mM and that inside the cell ([Na]) is 23.0 mm, and the cell...
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