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
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5. What is the free energy change in transporting an uncharged molecule across the membrane of...
5. What is the free energy change in transporting an uncharged molecule across the membrane of a cell from 10 M to 10 M? Is an input of free energy required for this transport? (5 points) 6. What is the free energy cost of pumping Ca out of a cell when the cytoplasmic concentration is 0.9 uM, the extracellular concentration is 1.5 mM, and the membrane potential is -70mV at a temperature of 25°C? What is the free energy cost...
What is a resting potential? Is it positive or negative? The resting potential is mainly due...
What is a resting potential? Is it positive or negative? The resting potential is mainly due to the main _____-charged large molecules stuck inside the neuron. The Na+/K+ pump pushes Na+ _____ of the cell and K+ ____ of the cell (in or out for each ion) Where is K+ concentrated, inside or outside of the neuron? Where is Na+ concentrated, inside or outside of the neuron? The action potential starts with an rise in membrane voltage. This is due...
L o Gromatic in cromatic room Membrane Transport Calculate the amount of energy available from or...
L o Gromatic in cromatic room Membrane Transport Calculate the amount of energy available from or required for the transport of 1 mol of Nat from the inside to the outside of the cell at 25°C. The concentration of Nat outside the cell is 200 mM and the concentration of Na' inside the cell is 10 mM. The transmembrane potential is 0.058 V. Show all your work. • What is the amount of energy available from or needed for the...
(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...
please show the work. thanks What is the free energy change for the transport of calcium...
please show the work. thanks
What is the free energy change for the transport of calcium ions into a cell. The intracellular [Ca2+] is 1 mM and extracellular [Ca2+] is 1 uM. Assume a membrane potential of -100 mV and T-25°C. Give your answer in kJ/mol to one decimal place.
At resting membrane potential (-70mV), there are more sodium ions inside the cell than there are ...
At resting membrane potential (-70mV), there are more sodium ions inside the cell than there are outside the cell. True or False?
1) lon Flow (15 points): Consider a neuron (at body temperature) with a chloride concentration of...
1) lon Flow (15 points): Consider a neuron (at body temperature) with a chloride concentration of 15 mM inside the neuron and 150 mM outside the neuron. Assume that the neuron has a resting membrane potential of-50mV. Which direction will the chloride ions move if all chloride channels open? Does opening of chloride channels have an excitatory or inhibitory effect on the neuron? (5 points) a) -100mV. Which direction b) Assume that the neuron has a resting membrane potential of...
lg0i0oyy.chUmycvitemiew assignmentProblemID-105296236 < Homework #8 How Neurons Work (1 of 3): Neuron Structure and Resting Potential...
lg0i0oyy.chUmycvitemiew assignmentProblemID-105296236 < Homework #8 How Neurons Work (1 of 3): Neuron Structure and Resting Potential (BioFlix tutorial) Part B- lon movements at resting potential The diagram below shows the five main transport proteins that control the distribution of Na" and Kt ions across the plasma membrane of an axon. the membrane is at resting potential-the membrane potential of the axon remains constant at about-70 mV Assume that Drag the arrows onto the diagram to show the direction of Na*...
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...
2. Explain how the resting membrane potential of a neuron is established by a. Listing the...
2. Explain how the resting membrane potential of a neuron is established by a. Listing the important ions/molecules that contribute to the establishment of the membrane potential (there are 4) Describing which direction the ions/molecules flow (if at all; in or out of the cell?) Telling me which one of the ions/molecules is the MOST important for establishing the resting membrane potential and WHY b. c. Explaining how this ONE important ion/molecule flows through the membrane by describing the opposing...
5. What is the free energy change in transporting an uncharged molecule across the membrane of a cell from 10 M to 10 M? Is an input of free energy required for this transport? (5 points) 6. What is the free energy cost of pumping Ca out of a cell when the cytoplasmic concentration is 0.9 uM, the extracellular concentration is 1.5 mM, and the membrane potential is -70mV at a temperature of 25°C? What is the free energy cost...
L o Gromatic in cromatic room Membrane Transport Calculate the amount of energy available from or required for the transport of 1 mol of Nat from the inside to the outside of the cell at 25°C. The concentration of Nat outside the cell is 200 mM and the concentration of Na' inside the cell is 10 mM. The transmembrane potential is 0.058 V. Show all your work. • What is the amount of energy available from or needed for the...
(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...
please show the work. thanks
What is the free energy change for the transport of calcium ions into a cell. The intracellular [Ca2+] is 1 mM and extracellular [Ca2+] is 1 uM. Assume a membrane potential of -100 mV and T-25°C. Give your answer in kJ/mol to one decimal place.
1) lon Flow (15 points): Consider a neuron (at body temperature) with a chloride concentration of 15 mM inside the neuron and 150 mM outside the neuron. Assume that the neuron has a resting membrane potential of-50mV. Which direction will the chloride ions move if all chloride channels open? Does opening of chloride channels have an excitatory or inhibitory effect on the neuron? (5 points) a) -100mV. Which direction b) Assume that the neuron has a resting membrane potential of...
lg0i0oyy.chUmycvitemiew assignmentProblemID-105296236 < Homework #8 How Neurons Work (1 of 3): Neuron Structure and Resting Potential (BioFlix tutorial) Part B- lon movements at resting potential The diagram below shows the five main transport proteins that control the distribution of Na" and Kt ions across the plasma membrane of an axon. the membrane is at resting potential-the membrane potential of the axon remains constant at about-70 mV Assume that Drag the arrows onto the diagram to show the direction of Na*...
2. Explain how the resting membrane potential of a neuron is established by a. Listing the important ions/molecules that contribute to the establishment of the membrane potential (there are 4) Describing which direction the ions/molecules flow (if at all; in or out of the cell?) Telling me which one of the ions/molecules is the MOST important for establishing the resting membrane potential and WHY b. c. Explaining how this ONE important ion/molecule flows through the membrane by describing the opposing...
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