Why are cells small? What is DNA? How do cells eat and move? What is pasteurization? How do molds grow? Why does bread rise? Grab your microscope and start looking for the answers! Cells and microbes are found everywhere, from inside your mouth to the puddle in your backyard. The simple experiments in this book will help young scientists begin to understand this important middle school and high school curriculum topic. For students interested in competing in science fairs, the book contains lots of great suggestions and ideas for further experiments.