If I slid a plant cells with a water potential averaging -.5 MPa Are placed into solution with a water potential of -.3 MPa, which of the following would be the most likely outcome?
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- Water will always move from an area of high water potential to low water potential. If you drop a cell with WP = 0 into the water with WP = -0.9, then what will happen to the cell?Consider a plant cell. The value for solute concentration in a plant cell is -0.12 MPa and the turgor pressure is 0.12 MPa. 1- What is the water potential in this plant cell? 2- If this plant cell were placed in a solution with water potential of -0.1 MPa, what would happen to the cell? (Hint: explain where the water goes and what that does to the cell).Estimate the equilibrium potential of a cell at 37 °C if the concentration of K* ions inside the cell is 50 times that on the outside of the cell.
- You are attempting to rupture cells. You systematically dilute a lysis buffer of ammonium sulfate in water and find that 54 mM is the point at which the cells rupture. You know that the internal osmolarity of the cells is 0.3 osM. Calculate the yield stress of the cell wall/membrane.SHOW COMPLETE SOLUTION 1. An electrochemical cell consist of 0.2715 Ibs of MnO2, and 0.2524 Ibs of PbO2. A current flow through a 1.1 ohm resistor of electrochemical cell for 45 mins. The reaction takes place at 400k and the total volume of the solution is 504.9 cm^3. Use the standard reduction cell potential table for MnO2 and PbO2: concentration of Mn2+ (2.81 M) and PbO2 (0.95 M) Cell Potential E=0.48 V current when it passes through a 1.1 ohm resistor = 0.44 ampere Determine the following: a. quantity of electricity/charge, Q b. Energy consumed in Joules c. Power in KilowattsA plant cell with a ΨS of -0.65 MPa maintains a constantvolume when bathed in a solution that has a ΨS of -0.30 MPaand is in an open container. The cell has a(A) ΨP of +0.65 MPa.(B) Ψ of -0.65 MPa.(C) ΨP of +0.35 MPa.(D) ΨP of 0 MPa
- Calculate the membrane potential in the transport of Cl- from the intracellular environment to the extracellular environment. The Cl- concentration outside the cell is 98 uM, the Cl- concentration in the cytoplasm is 0.025 mM, the Gibbs free energy is -956 J/mol and the temp is 37°C. Have concentration in uM units when solving.W lhai is une tonicity of the ceii if its ECF is surrounded by 20% soiute and iCF conains 13% soiute? Show your solution. Draw the solid arrows to indicate the net movement of the solutes into and/or out of the cell. Is the tonicity of the cell isotonic, hypertonic or hypotonic? ICF ECF 15% 20% 4. What is the cell tonicity of the plant if its ECF has 73% salt and its ICF has 10% salt? Show your solution. Draw the solid arrows to indicate the net movement of the solutes into and/or out of the cell. Is the tonicity of the cell isotonic, hypertonic or hypotonic? ICF ECF 10% 73%given the perfect osmometer (plasma membrane bounded by perfectly rigid walls) inside the cell, the solute potential is 0 and the pressure potential is 0, outside the cell the water potential is also 0 you add a dilute salt solution that changes the osmotic potential of the solution to 0.3MPa 1. what is the approximate value of the solute potential and pressure potential inside the cell after the system has come to equilibrium? 2. why does the movement of relatively few water molecules across the plasma membrane of the osmometer have such a large effect in the value of pressure potential?
- water potential a) At 20°C, a cell containing 0.6M glucose is in equilibrium with its surrounding solution containing 0.5M glucose in an open container. What is the cell’s ΨP? b) At 20°C, a cell with ΨP of 3 bars is in equilibrium with the surrounding 0.4M solution of sucrose in an open beaker. What is the molar concentration of sucrose in the cell?plant cells with an aqueous potential of -600kPa were placed in different aqueous potentials. Determine in which of the following cases after 10 minutes the cells were blocked, started plasmolysis or completely subjected to the latter. Solution A is -400kPa, solution B is - 600kPa, solution C is -900kPa and solution D is distilled water0.4 osM 0.3 osM True or false about the diagram where a cell is placed into the 0.4 osM solution: the cell will shrink and appear crenated due to osmotic pressure