Edvotek™ Advanced Placement Laboratory Kit 1: Principles and Practice of Diffusion and Osmosis

Experiments help students develop an understanding of the molecular basis of diffusion and osmosis and its physiological importance.

Supplier:  Edvotek™ 281

Catalog No. S11281

Includes: instructions, orange indicator dye, violet dye, sucrose, NaCl solution, powdered sucrose, dialysis tubing

Description

• Analyze how solute size and concentration affect diffusion across semi-permeable membranes and how these processes affect water potential
• Calculate water potential of plant cells
• Class size: 40 students working in groups of 4

Part A: Dialysis experiments utilizing two dyes of different molecular weights visually demonstrate the size selectivity of membranes. Experiments also demonstrate changes in the equilibrium of the diffusible dye as it is removed from system.
Part B: Experiment approximates an osmotic system by demonstrating net flow of water through a dialysis membrane.
Part C: Involves the calculation of potato cell water potential from experimental data.

Order Info

Class size: 40 students working in groups of 4.

Specifications

• Product Type: AP Biology Lab Kit 1: Principles and Practice of Diffusion and Osmosis
• Includes: Low molecular weight indicator dye, high molecular weight violet dye, 1m sucrose, 1m nacl solution, powdered sucrose, dialysis tubing, comprehensive instructions, background material and study questions
• Content And Storage: Room temperature

• For Use With (Application): Experiments help students develop an understanding of the molecular basis of diffusion and osmosis and its physiological importance, analyze how solute size and concentration affect diffusion across semi-permeable membranes and how these processes affect
• Time Range: 60 to 90 min.
• Class Size: 40 Students