osmosis - exercise 10 ml of solution (starch + protein +...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Solvent = solute(s) + solvent a examine diffusion of solutes ` dialysis a examine diffusion of the solvent (water) ` osmosis 2 Diffusion exercise a Movement of molecules from high concentration to low concentration (down the concentration gradient) a diffusion through ` solid (agar plates) ` liquid ` gas 3 Diffusion cont. a Rate temperature (increase diffusion w/ increase temp) MW (increase diffusion w/ decrease MW) a solute MW T in o C potassium permanganate = 294.21 5 o , 25 o Janus Green = 511.09 5 o ,25 o
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Osmometer exercise, demo movement of water across a differentially permeable membrane a Setup #1 water sucrose a Setup #2 water sucrose 5 Osmosis experiment water 10% sucrose, water 20% sucrose, water 40% sucrose, water water, 40% sucrose 6 Permeability of Membranes,
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: exercise 10 ml of solution (starch + protein + NaCl + Na 2 SO 4 ) test water for: Starch w/ Iodine (blue-black) Cl-w/ AgNO 3 (milky white ppt.) SO 4-w/ BaCl 2 (white ppt.) Protein w/ Biuret (violet) 7 Tonicity exercise plant cells (Elodea leaf cells) Turgid a hypotonic solution a water enters cell a chloroplasts are at the periphery of the cell Plasmolyzed a hypertonic solution a water leaves the cell a chloroplasts are at the center of the cell 8 Tonicity exercise animal cells (erythrocytes) a normal (0.85% NaCl) ` isotonic ` no net movement of water a crenated (10% NaCl) ` hypertonic ` water leaves a hemolyzed (0.45% NaCl) ` hypotonic ` water enters...
View Full Document

This note was uploaded on 01/06/2012 for the course BIOL 1406 taught by Professor Markgarcia during the Fall '11 term at Collins.

Page1 / 3

osmosis - exercise 10 ml of solution (starch + protein +...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online