The planned fast depolarizing phase coincides with: *
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- There is onlu one answer that correct A cell is at rest at -70 mV, and chloride channels open. In which direction does chloride flow and how does this affect the membrane potential? Group of answer choices One would expect the efflux of Cl-,this making the inside of the cell more positive. One would expect the influx of chloride ions resulting in the movement away from threshold. There would be no effect as the permeability for Cl is ZERO Based on yesterday's lab, chloride plays no role in the membrane potentialThe living cells in the body has mechanical potential difference across cell membrane. O False TrueWhat is an average range of millivolt difference between resting membrane potential and threshold potential? 150-300mV 1-2mV 0.005-500mV 15-30mV
- When two chambers are separated by a membrane permeable to water but not solute, if water is free to move in either direction without limitation or pressure, then water will move until the concentration of solute on both sides of the chamber is equal move until there is no water on the dilute side move until there is no water on the concentrated side move until the concentration of water on both sides of the chamber is equalLet’s say that the intracellular tonicity is 300 mosm. Checkmark the correct response to what would happen to the cell when it is placed in the following solutions prepared from sucrose (impermeable), NaCl (impermeable), and urea (permeable). Solution Nothing Swell Shrink 100 mM sucrose 200 mM NaCl 300 mM urea 300 mM NaCl 100 mM sucrose + 100 mM NaCl 100 mM ureawhat would be the consequences for the cell is k+ ions did not binds to the Na + / k + pump in the cell
- Diffusion and osmosis classification Classify the following characteristics based on whether they are describing diffusion, osmosis, or both. Diffusion Results in an Can occur with equal distribution of solute molecules or without a membrane Always involves the movement of water Requires a semi-permeable membrane Osmosis Involves the movement of gases, ions, and small water soluble molecules Passive form of movement that requires no energy Moves from areas of high concentration to low Both Diffusion and Osmosis Responsible for gas exchange in the lungs concentration A 3 of 15 Next > Cation to open the document "Epicinstaller-13.0.0-fortnite-a8e4f12cada646caa706d8be407be69f (3).msi". tv 22Left Compartment Right Compartment 7 grams of Z per liter solution 4 grams of XY per liter of solution total volume = 1 liter. total volume = 1 liter Solute Z has a molecular weight of 20 (non-dissociable) Solute XY has a molecular weight of 10 (dissociates into X+ and Y-) 1. If the membrane is impermeable to all solutes, and there are 7 g/l of solute in the left compartment, what concentration of XY (g/l) in right compartment would make the solutions isotonic?difference between channels and transporters is that O Only channels allow for the passage of solutes against their electrochemical gradient. OTransporters allow for a greater rate of transport across a membrane than channels do. O Only channels allow for the transport of ions. Transporters must undergo a conformational change upon binding to the solute.
- https://www.youtube.com/watch?v=_bPFKDdWlCg&feature=youtu.be – Na/K pump Answer the following question: How does the movement of three positive Na ions out of the cell and two positive K ions into the cell make the inside of the cell negative?If sodium permeability were to increase compared to normal what would be the resulting effect on the membrane potential 1.The charge on the inside of the cell becomes less negative compared to resting conditions and hyperpolarizes 2.The charge on the inside of the cell becomes more negative compared to resting conditions and hyperpolarizes 3.The charge on the inside of the cell becomes less negative compared to resting conditions and depolarizes 4.The charge on the inside of the cell becomes more negative compared to resting conditions and depolarizesWhich of the following takes place during phase L? +30 M N K -55 -70 Time Sodium ions move into the cell Sodium ions move out of the cell Potassium ions move into the cell Potassium ions move our of the cell Membrane potential (mV)
