41800307 – main blood cells in scale isolated on white background
Introduction
Cells require a constant supply of glucose and oxygen to produce energy. Cellular respiration occurs in the mitochondria of a cell. As a result of this process, large quantities of waste carbon dioxide must be expelled from the cell. All materials involved in this reaction are either imported or exported through the cell membrane by diffusion.
Students observe the effect of cell volume and surface area on the extent of diffusion of the sodium hydroxide solution through the “cell”.