Use cubes of agar to investigate how size impacts diffusion. All biological cells require the transport of materials across the plasma membrane into and out of the cell. By infusing cubes …

Using Agar Cubes with indicator, vinegar and some simple mathematics, we can see how much effect a small increase in surface area has on volume. In this practical, students are given …

In this page, you will find instructions on how to prepare the Agar Cube used in the "Why Are Cells Small" activity.

Oct 18, 2024 · When an agar cube (or for example a biological cell or organism) increases in size, the volume increases faster than the surface area, because the volume is cubed whereas the …

Explain why the agar cubes change colour when placed in the vinegar solution. pH indicator, and start of alkaline. As the vinegar difuses through the cube, the indicator cha

The smallest agar cube (1 cm tested) or (0.01 cm untested) had the most efficient surface area to volume ratio. From the table, the 1 cm cube had a ratio of (6/1) or (600/1) compared to a ratio …

Use cubes of agar to investigate how cell size impacts diffusion. All biological cells require the transport of materials across the plasma membrane into and out of the cell. By infusing cubes …

Set up cubes of agar jelly and see how far liquid penetrates them by diffusion over five minutes. Calculate surface area to volume ratio for cubes of different sizes and consider the problems …

Prepare a 2% solution of agar. Mix 20 g of agar with 1 L of distilled water. Heat almost to a boil. Stir frequently until solution is clear. Pour agar into a shallow tray to a depth of 3 cm and allow …

This activity uses agar to model a cell to examine why cells must be very small. Agar molds are cut into different sizes and the rate of diffusion is measured by color change of the agar when …