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PHY2011 - Neuroscience of communication, sensory and control systems - S1 2025

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What is the Tonicity of a solution of 0.28 M sucrose (cane sugar) compared to the tonicity of a Red Blood Cell?

 (Assume the tonicity of a Red Blood Cell to be 280 mOsm and the Molecular Weight of Sucrose =340)

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Compared to an RBC with intracellular osmolarity and tonicity of 280 mOsm, an extracellular solution of 140 mM NaCl and 10 mM Glycerol is (assume perfect dissociation of NaCl)

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Lysis of RBCs occurs rapidly in 20% physiological saline because this solution is

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Lysis of RBCs occurs faster in Urea than in Ethylene Glycol (EG) because 

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Surface area (SA) is not a constant in Fick’s Law because

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Red Blood Cells placed in distilled water will lyse very quickly because

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What is the Osmolarity of a solution of 180 mM of urea + 100mM of sucrose compared to 100% Physiological Saline?

 (Assume Osmolarity of 100% physiological Saline to be 300 mOsm and the Molecular Weight of Urea = 60 and Molecular weight of Sucrose=340)

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What is the Osmolarity of a solution of 280mM sucrose (cane sugar) + 280mM of urea compared to 100% Physiological Saline?

 (Assume Osmolarity of 100% physiological Saline to be 300 mOsm and the Molecular Weight of Urea = 60 and the Molecular weight of Sucrose=340)

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33%
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In comparison to RBCs distilled water is

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What is the Tonicity of a solution of 280 mM Urea  compared to the tonicity of a Red Blood Cell?

(Assume the tonicity of a Red Blood Cell to be 280 mOsm and the Molecular Weight of Urea=60)

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View this question

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