What is the osmotic pressure of a 38 M glucose solution that intravenously injected to the blood at 37 degrees Celsius?
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What is the osmotic pressure of a 38 M glucose solution that intravenously injected to the blood at 37 degrees Celsius?
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- Does 30% NaCl (MW=58.44g/mol,ionic) have the same, increased, or decreased osmotic pressure as 30% sodium phosphate? Why?In the Nernst equation [V = 62 log10 (Co/ Ci)], the term Co represents: the intracellular concentration of potassium the intracellular concentration of chloride the membrane potential (in millivolts) the extracellular concentration of sodium the extracellular concentration of potassiumA 5% dextrose is isoosmotic to plasma. What effect would infusion of 1L of a 5% dextrose solution have on ECF and ICF volumes? How it would affect body fluid osmolality of a 70 kg individual and why?
- The osmolarity of plasma is maintained at about 300 mOsM. What would the osmolarity inside a red blood cell need to be to maintain osmotic equilibrium between the intracellular fluid and plasma? Give one specific reason why it is important to maintain plasma omolarity within a narrow range of values.The membrane separating compartments A and B of the following chamber is permeable to Cl- ions (gCl = 5) but impermeable to water and K+. The initial concentrations of KCl in compartments A and B, before diffusion has occurred, are presented below. Use this information to answer questions 9-12. Note: Whenever necessary, consider compartment A as the ICF and compartment B as the ECF. KCl = 10 mM A KCl = 150 mM B 9. After equilibrium, the potential of compartment A will be _____mV (include polarity) compared to a reference of 0 mV. Consider compartment B as the outside. A) -70 mV B) 70 mV C) -90 mV D) 90 mV 10. At equilibrium, the flux of Cl- from compartment A to compartment B will be ______ the flux of Cl- from compartment B to compartment A. A) equal to B) less than C) more than 11. Increasing the concentration of [Cl-] in compartment B from 150 mM to 200 mM will ______________. A) make ECl more positive B) make EK more negative C) make ECl more negative D) not change the value of ECl…A red blood cell with an intracellular fluid (ICF) concentration of 280 mmol/L, is placed into an environment were the concentration of the extracellular fluid (ECF) is 305 mmol/L. As a result, water will move across the cell/plasma membrane. a) Name the process by which water moves b) Describe the overall direction of movement of the water. Answer choices: (i) From outside the cell to inside the cell (ii) From inside the cell to outside the cell, or (iii) Equally, into and out of the cell iii Explain your reasoning for your answer to part (c). 1In your answer you must describe the environment on both sides of the membrane, and use 3 of the following 4 terms correctly; hypertonic, hypotonic, lower solute concentration, higher solute concentrationn (2pts -Correct use of biological terminology, and correct spelling is essential. Edit View Insert Format Tools Table 12pt v Paragraph BIUA ...
- A 28-year-old woman who is in the final stages of running a marathon on a hot day has regularly consumed Water along the path. She begins to have a severe headache and shows symptoms of being confused. She has been sweating profusely, losing elec- trolytes and, to compensate, has been drinking pure water. Explain the osmotic nature of what is happening in relationship to the movement of water in her blood and brain cells and what should be done to correct the problem.Draw a general representative plot of Hemoglobin Absorbance versus Osmolarity for data obtained by exposing red blood cells to sucrose solutions of 0, 100, 200, 300, 400, 500 mM sucrose.Enalaprilat is a competitive inhibitor of the angiotensin-converting enzyme (ACEACE), which cleaves the blood-pressure regulating peptide angiotensin I. ACEACE has a KM=52KM=52 μMμM for angiotensin I, which is present in plasma at a concentration of 75 μMμM. When enalaprilat is present at 2.4 nMnM, the activity of ACE in plasma is 14 %% of its uninhibited activity. What is the value of KIKI for enalaprilat?
- The diffusion coefficient for potassium ions crossing a biological membrane 10 nm thick is 1.0 x 10-11 m2/s. What flow rate of potassium ions will move across an area of 100 nm x 100 nm if the concentration difference across the membrane is 0.5 mol/dm3.In the Nernst equation [V = 62 log10 (Co/ Ci)], the term Co represents: the intracellular concentration of calcium the extracellular concentration of potassium the extracellular concentration of sodium the intracellular concentration of potassium the membrane potential (in millivolts)How can you apply the Michaelis-Menten dynamics to explain what happens in plasma concentration of a solute reaches Tm and the effect that has on the Clearance of the solute?