Curated OER
Cell Size and Division or How Big Would You Want To Be if You Were a Cell?
Learners investigate why cells divide. In this cell size lesson plan, students observe how far a solution travels into 3 different size model cells of agar. They answer questions about the most effect movement of "nutrients" into the...
Nuffield Foundation
Effect of Size on Uptake by Diffusion
Cell size is limited by the surface area to volume ratio, but why is this true? Scholars measure the surface area and volume of cubes before placing them into liquid. After a set amount of time, they measure the uptake by diffusion for...
Curated OER
Surface to Volume Ratios
Young scholars measure the rate of diffusion and to calculate the surface area to volume ratios of varying cell sizes. The lesson is very clearly organized with a useful student worksheet provided. They perform a lab experiment which is...
Curated OER
AP Biology Lesson Outline
Ninth graders research the different field of bioengineering. For this biology lesson, 9th graders differentiate meiosis and mitosis. They discuss the pros and cons of using radiation in medical diagnostics.
Curated OER
Operating the spectrophotometer
Working in small groups, pupils explore the operation of spectrophotometer. Using the spectrophotometer, they investigate Beer's Law with everyday items.