This lecture provides an introduction to the fundamental concepts of biology relevant to materials engineering. It covers the structure and function of cells, emphasizing the importance of cellular components in engineering applications. The instructor discusses the basic unit of life, the cell, and its various types, including prokaryotic and eukaryotic cells. The lecture outlines the course structure, which includes three main blocks: engineering with cellular components, inter- and intracellular actions, and the physics of biological processes. Students will learn about proteins, DNA, and the mechanical properties of cells, which are crucial for designing bioinspired materials. The lecture also highlights the significance of understanding biological interactions for future materials engineering challenges. By the end of the session, students will be equipped with foundational knowledge that prepares them for more advanced topics in biomaterials. The course aims to bridge the gap between biology and engineering, providing insights into how biological principles can inspire innovative material solutions.