Choose high or low When the ion binding sites pumps are open to the inside of the cell the pump has a high/low affinity to potassium and a high/low affinity for sodium. When the ion binding sites are open on the outside the pump has a high/low affinity to potassium and a high/low affinity to sodium
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- Describe the contribution of each of the following to establishing and maintaining membrane potential: (a) the Na+K+ pump, (b) passive movement of K+ across the membrane, (c) passive movement of Na+ across the membrane, and (d) the large intracellular anions.Which of the following regarding the sodium potassium pump is FALSE? It tends to be found on the apical plasma membrane of polarized cells It transports three sodium ions to the outside of the cell It transports two potassium ions to the inside of the cell. It helps to maintain unequal distribution of ions across the plasma membraneWhen a cell is placed in a solution with a very low solute concentration,water diffuses into the cell.Such a solution is called.... solute. Cell shrinking,also known as crenation,occurs a cell is placed into a(n)..... solution. The sodium-potassium pump moves. coupleted transport that involves the moving of one substance against its concentration gradient by using energy from a second substance moving down its concentration gradient is known as ... The release of neurotransmitter from a neuron is an example of.... The uptake of cholesterol into cells is an example of.... When a cell surrounds a large particle with pseudopodia and then engulfs it,the process is called... When a ligand binds to them,.... receptors directly phosphorylate enzymes within the cell.
- The electrochemical gradient across the plasma membraneGroup of answer choices is caused by more sodium on the inside of the cell relative to the outside of the cell Contains stored potential energy that can be harvested by the cell is caused solely by the sodium/potassium ATPase is a form of kinetic energy that can be harvested by the cell All of the aboveThe resting membrane potential is established by? The Na+/K+-ATPase pumping Na+ into the cell and K+ out of the cell The Na+/K+-ATPase pumping K+ into the cell and Na+ out of the cell A larger diffusion of K+ out of the cell compared to diffusion of Na+ into the cell A larger diffusion of K+ into the cell compared to diffusion of Na+ out of the cell a) and d) b) and c)Which of the following ion channels are always electrosensitive? stress-activated channels ligand-gated channels with extracellular ligands voltage-gated channels ligand-gated channels with intracellular ligands all of the above
- In 5-7 sentences. Provide a narrative overview of the function of the receptor including: The extracellular signal that acts as the ligand for the receptor The physiological response that is induced The benefits of this pathway to the cell/organismWhich of the following ion channels are always sensitive to small changes in electric charge? stress-activated channels ligand-gated channels with extracellular ligands voltage-gated channels ligand-gated channels with intracellular ligands all of the aboveBinding of acetylcholine to postsynaptic membranes increases the conductance of Na+ into the cell. It is an example of Group of answer choices active transport voltage-gated channel ligand-gated channel passive transport symporter
- Cell swelling will most directly affect which type of channel protein? Group of answer choices Mechanically gated ion channel Ligand-gated ion channel Ligand-gated ion channel with intracellular ligand binding site Voltage-gated ion channelFinally, what will be the effect on the membrane potential if K+ loan move out of the cell?a) K+ will bring the membrane potential to 0 (neutral) b) The membrane potential won't be significantly affected (non-polarizing) c) K+ leaving will make the inside of the cell more negative (hyperpolarizing) d) K+ will make the inside of the cell more positive (depolarizing)When the net charge on either side of the plasma membrane is zero, what else is true? There is an equal number of K+ ions on each side of the plasma membrane. The K+ leak channels are open. The electrochemical potential across the membrane is zero. The resting membrane potential is between -20 mV and -200 mV.