BIO 203. Salt/water worksheet, 10/23/2016 Name Psite Pasa -5018136 lonic concent
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BIO 203. Salt/water worksheet, 10/23/2016 Name Psite Pasa -5018136 lonic concentrations (mM) Habitat (moSM) Na* KCat g soa- Osmolarity Seawatert 1000 460 10 10 53 540 27 enterata urelia (jellyfish) 454 10.2 51.0 554 146 SW Given the data concerning the ionic composition of the extracellular fluid for the "jellyfish Aurelia, make some predictions about the osmotic relations of this organism. 1. Assuming the solutes listed above contribute the bulk of the osmotic pressure, and that the solutes are ideal, calculate what you expect the osmolarity of the extracellular fluid to be. Write it in the box here and in the table above. 2. If the solutes above are not ideal, will the actual osmotic pressure be (circle one) Greater than that calculated above Less than that calculated above The same as that calculated above 3. Circle all the correct statements below Aurelia is an osmoconformer Aurelia is an ionoconformerExplanation / Answer
From the given concentrations of the solutes, the osmolarity of the extracellular fluid is found to be approx. 994 mosM.
If the taken solutes are not ideal then the osmotic pressure will be greater than the calculated.
As Aurelia maintains the internal environment osmotic to the external environment, they are osmoconformers.
Good Luck!
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