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Compare and contrast how water volume and osmolality are regulated.
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- Explain the behavior of water molecules in the isotonic solution.Explain the role of osmosis and that of osmotic pressure in controlling the movement of water across the cell membrane. Compare hypotonic, isotonic, and hypertonic solutions.Suppose a person is stranded in the middle of a sea with a boat. Can this person drink seawater to alleviate his thirst? Discuss and relate your answer with the concept of osmosis.
- Contrast the relative concentrations of sodium and potassium ions inside and outside of a cell.Calculate the change in osmolarity and the volume of extracellular and intracellular fluid when a hypertonic or hypotonic solution is addedHow might a buffer help maintain homeostasis? Explain your answer.
- A cell is placed in a solution and it swells and bursts. Explain what happened using the words osmosis, solute, osmotic pressure, and hyper-, hypo- or -iso-tonic.From the list provided select the best choice to complete the sentence below. An overall property that describes the way solutes move through membranes relative to the bulk solution concentrations is A. Diffusivity B. Membrane permeabliltiy C. porosity D. Steric hindranceDescribe the movement of the solute and explain why this is considered passive transport.