There are four broad classes of macromolecules that can be found in living systems. Each type of macromolecule has a characteristic structure and function in living organisms. You can use your knowledge of the basic structure of each macromolecule to perform tests in the lab that detect the presence or absence of key functional groups or overall characteristics in various substances through the use of indicators.
Students were given a scenario in which they had to play the role of scientists at a Canadian Food and Drug Administration Center for Nutrient Analysis where they test various food items for protein, lipid and carbohydrate content. In the face of an impending zombie epidemic, they must use their knowledge and understanding of biochemical compounds to determine which food substances could be used to quell the zombie epidemic. To do this they must analyse a variety of foods to determine which has the highest levels of complex carbohydrates and proteins which have been found to kill the zombie’s brain cells.