4 Types of Macromolecules in Cells (image) University of California - Santa Barbara Caption This image shows four types of macromolecules in cells. The nucleic acids DNA and RNA and proteins are on the left and glycans and lipids are on the right. Credit UCSB Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.