Diffusion and Cell Size

Why are cells microscopic? The answer relates to the needs for the cell to effectively move materials in and remove waste. In this activity, students will create simulated cells (agar blocks) of different sizes and examine how effectively a substance is able to diffuse into the cell in a set period of time. A special indicator in the cells will allow students to visualize the degree of diffusion. The results will clearly display the fact that a smaller volume creates a more favorable condition for the exchange of material across a cell membrane.

Kit contains enough materials for 15 groups of students. Teacher's Manual and Student Study Guide copymasters are included.

Kit includes:

• Agar - 75 g x 1 Bottle
• Bromothymol Blue Concentrate - 25 ml x 1 Bottle
• 2.0M Hydrochloric Acid - 25 ml x 3 Bottles
• Agar Block Casting Trays - 16 pcs
• Plastic Cups - 15 pcs
• Plastic Knives - 15 pcs
• Plastic Stirrers - 15 pcs

Please note that the pictures below may show items not included in this kit, the pictures are there to show kit functionality. Please refer to the product details above for more information on the contents of this kit.

DOT: Small quantity exemption 173.3. This package conforms to 49 CFR 173.4 for domestic highway or rail transport only

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This product may be shipped directly from the manufacturer and can arrive in a separate shipment. There can be a delay if the manufacturer does not have this item in stock.

If this product contains Chemicals, it can only be shipped via Ground. Please do not select any other shipping method. It will delay your order.

RETURNS NOT ACCEPTED: To ensure no contamination, we have a NO RETURN policy for this product. Absolutely NO RETURNS even if the box / container is unopened.