1-what role do the steep Na+ and K+ electrochemical gradients across animal cell membranes play? 2-...
Homework Answers
1- If theres a steep Na+ and K+ electrochemical gradients , the ions would rapidly enter the cell and there would be a Rapid developement of the action potential.
2- Potential energy of an electrochemical gradient is released when the ions move across the membrane.
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1-what role do the steep Na+ and K+ electrochemical gradients
across animal cell membranes play?
2-...
The electrochemical potential that is found across cell membranes can play a role in what types...
The electrochemical potential that is found across cell membranes can play a role in what types of processes? Choose all that apply the movement of a muscle the uptake of molecules against a concentration gradient the transmission of a nervous system signal the exchange of gases between capillaries and surrounding cells
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane....
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane. (That's obvious) 2. It plays a role in maintaining the resting membrane potential. Why? 3. The steep electrochemical gradient of Na+ is used in "coupled active transport" (coupled pumps). If the Nat/K+ pump stops, then these Na+ coupled transport mechanisms will also eventually stop. Explain The apical surface of the epithelial cells that line the lumen of the gut contains a symport that used...
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...
Question 33 2.5 pts The Na+-K+ ATPase transporter found in the plasma membrane of most animal...
Question 33 2.5 pts The Na+-K+ ATPase transporter found in the plasma membrane of most animal cells gets its energy from: ATP hydrolysis The electrochemical gradient across the membrane O Co-transport of H+ into the cell None are correct, this transporter functions by facilitated diffusion All are correct
Considering that the Nat-K+ ATPase membrane protein is essential for maintaining an electrochemical gradient across cell...
Considering that the Nat-K+ ATPase membrane protein is essential for maintaining an electrochemical gradient across cell membranes, which of the following is likely not a component of an electrolyte solution for treating dehydration? Choose one: O Ο Α. ΑΤΡ B. potassium o C. glucose • D. sodium
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...
1. Given equal concentrations gradients of Na+ and O2 across a typical cell membrane, which substance...
1. Given equal concentrations gradients of Na+ and O2 across a typical cell membrane, which substance will diffuse faster and why? 2. if the recording and reference electrodes were both placed on the outside surface of a typical nerve cell membrane, what would be the potentiometer read? 3. the bod between the oxygen and hydrogen atoms between two water molecules is called what bonds?
Lo 10: Electrochemical Gradient The difference in voltage across the membrane is called the __________________________________. The...
Lo 10: Electrochemical Gradient The difference in voltage across the membrane is called the __________________________________. The inside of a normal cell is ___________________ (+/-); while the outside is ___________(+/-). The resting membrane potential of a neuron is ___________mV. Diagram the relative ratios of Ca++, Na+ and K+ in a cell under resting conditions. Draw an arrow for each of the molecules indicating which direction would be passive transport (into or out of the cell). For each of the following sentences, fill in...
The function of the "ion pump" in nerve chemistry is to transport Na^+ and K^- against...
The function of the "ion pump" in nerve chemistry is to transport Na^+ and K^- against their concentration gradients in order to maintain constant values of their concentrations regulate the speed of transport of all ions across nerve cell membranes. transport Ca^2+ and Cl^- against their concentration gradients in order to maintain constant Values of their concentrations. allow the passage of Na^+, K^-, Ca^2+, and Cl^- faster than simple diffusion allows. prevent the transport of any ions against their concentration...
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane. (That's obvious) 2. It plays a role in maintaining the resting membrane potential. Why? 3. The steep electrochemical gradient of Na+ is used in "coupled active transport" (coupled pumps). If the Nat/K+ pump stops, then these Na+ coupled transport mechanisms will also eventually stop. Explain The apical surface of the epithelial cells that line the lumen of the gut contains a symport that used...
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...
Question 33 2.5 pts The Na+-K+ ATPase transporter found in the plasma membrane of most animal cells gets its energy from: ATP hydrolysis The electrochemical gradient across the membrane O Co-transport of H+ into the cell None are correct, this transporter functions by facilitated diffusion All are correct
Considering that the Nat-K+ ATPase membrane protein is essential for maintaining an electrochemical gradient across cell membranes, which of the following is likely not a component of an electrolyte solution for treating dehydration? Choose one: O Ο Α. ΑΤΡ B. potassium o C. glucose • D. sodium
The function of the "ion pump" in nerve chemistry is to transport Na^+ and K^- against their concentration gradients in order to maintain constant values of their concentrations regulate the speed of transport of all ions across nerve cell membranes. transport Ca^2+ and Cl^- against their concentration gradients in order to maintain constant Values of their concentrations. allow the passage of Na^+, K^-, Ca^2+, and Cl^- faster than simple diffusion allows. prevent the transport of any ions against their concentration...
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