We will observe the similarities and differences between animal and plant cells. We will investigate the chemical components of both plant and animal cells. We will explore the question of whether animal and plants cells contain similar chemical components. The chemical components we will be looking for, starch and proteins , are called macromolecules .
Macromolecules are large molecules made up from small sub-units.
Starch is made up of single sugar molecules while proteins are made up of amino acids. The concept of a control is also introduced. A control is an extra experiment in which we can predict the outcome. It is important because it allows us to make comparisons between the control and unknowns. In understanding a control we must realize there are both positive and negative control tests.