The large molecules necessary for life that are built from smaller organic molecules are called biological macromolecules. There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. Follow the general instructions for written laboratory reports. The following. Write a balanced chemical equation for this chemical reaction. The reactions taking place for this step. You will then follow the steps of the scientific method and write a lab report. Jan 26, 2016 mf membranes are. -A lab report asks you to monitor the color of a ...