This document provides an overview of biotechnology. It begins by defining biotechnology as using living things to make useful products. It then discusses the history and development of biotechnology. The document outlines several types of biotechnology including green (agriculture), red (medical), white (industrial), and blue (aquatic) biotechnology. It provides examples of how each type is used. The document also discusses uses of biotechnology in medicine, agriculture, environmental applications, cloning, and genetic testing. It defines key terms like bacterium and explains the process of DNA replication and how genes are transferred.