The mitochondrial model is a teaching tool used in biology education to showcase the fine structure and function of mitochondria, the "power factory" in cells. This model is presented in a transparent or semi transparent form, which can clearly display the components of mitochondria such as outer membrane, inner membrane, cristae, and matrix. In biology teaching, mitochondrial models can help students intuitively understand the processes of cellular respiration and energy metabolism, and learn how mitochondria produce ATP through oxidative phosphorylation to provide energy for cellular activities. By observing the model, students can grasp the close relationship between the structure and function of mitochondria, and understand the key role of mitochondria in cellular energy conversion and maintenance of life activities.