It indicates how information flows in cells and indicates a lot about the work that a cell does in maintaining and recreating itself, and maintaining its environment.

这个图展示了信息如何在细胞内传递,以及细胞,在维持 复制自身,和维持其周围环境所需起的作用

耶鲁公开课 - 生物医学工程探索课程节选