This lecture explores the concept of symmetry and conservation in cellular biology, focusing on the biophysics of cells. It covers topics such as the structure of cells, the importance of randomness in cellular functions, and the role of computer simulations in understanding cellular dynamics. The course delves into the principles of symmetry and conservation in cellular processes, emphasizing the significance of energy, entropy, shape, flexibility, and fluctuations. Through a series of lectures and simulations, students will gain insights into the fundamental principles governing cellular behavior and the computational modeling of cellular structures.