Explain to me what factors influence permeability versus solubility?
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- What would the membrane potential be if the cell membrane suddenly became 10X more permeable to just sodium?To which in is the membrane most permeable? You should have learned several basic principles of electrophysiology. Describe the key principle that your answer is based on [Na+]=10mM [K+]=100mM [Na+]=100mM [K+]=10mM Vm= -60mVIf 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 depolarizes
- The intracellular salt content of a red blood cell is about 150 mM. The cell is put in a 500 mM salt beaker. (a) Describe what will happen to the cell in terms of osmosis if the cell membrane is permeable to water but not to ions. (b) Which direction would solutes diff use if the membrane was permeable to ions: into or out of the cell?What is the effect of different alcohols on membrane permeability? We made the lab with a beetroot. We had methanol, ethanol, and propanol. the results were: The scale of colors were 7 darkest red and 0 colorless. Methanol, 7. Ethanol, 4. Propanol, 3. I am having a issue undertanding the hypothesis of this experiment. Like the purpose and why the colors mean something.In general, what is the relationship between membrane fluidity and membrane permeability?
- what would the membrane potential be if the membrane became 10X more permeable to both sodium and chlorideFor most neurons, the extracellular concentration of chloride ions (Cl-) is 108 mM, whilethe intracellular concentration of Cl- is 5 mM.If the plasma membrane becomes more permeable to Cl-, would there be Clinflux or Cl- efflux at an RMP of -70 mV? Why?Why do you think a Medical Technologist should know the basics of Osmosis, Diffusion and Emulsification processes?
- What type of ion channel contributes to the restingmembrane potential? Describe the permeabilitycharacteristics of the plasma membrane.Let’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 is Selective Permeability?