Pre lab Investigation question: What variables affect the passage of molecules through a cell membrane?

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Presentation transcript:

Pre lab Investigation question: What variables affect the passage of molecules through a cell membrane?

Part I Adding salt solution to Elodea- cellular level _YHakvho&feature=relatedhttp:// _YHakvho&feature=related Adding distilled water – organism level of organism Tmnchttp:// Tmnc

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Some definitions to work with. Solute: a substance dissolved in a liquid Solvent: the dissolving medium in a solution. Concentration: the strength of a solution; number of molecules of a substance in a given volume.

Part II-dialysis model Molecule size investigation (2 students/group) Solute concentration investigation (2 students/group) Homework: plf