In the leveled reader The Cell: A Tiny City, fundamental science concepts in biology are explained through simply written text and colorful, fun illustrations. Young readers discover that atoms make up everything we touch, taste, smell, and see. Atoms link together to make molecules. Frogs, plants, rocks, and stars are all made of molecules, but frogs and plants are different from rocks and stars because frogs and plants have cells. Cells are made of atoms and molecules organized into special molecules, such as proteins and DNA. Proteins are molecules made of long strands of linked atoms. Proteins fold into many different shapes and sizes and do different jobs in cells. DNA is a long strand of linked atoms that contains a code that tells cells what to do. Proteins and DNA work together like a tiny city. In a cell, just like in a real city, different jobs must be performed to make it function.A pronunciation guide of scientific terms is included. 24 pages filled with engaging, colorful illustrations. Reading Level 1-3, Interest Level 2-5.