Energy Flow in Photosynthesis and Cellular Respiration — Cellular Respiration

About this lesson

This lesson focuses on cellular respiration, distinguishing it from gas exchange in living organisms. It explains the structure of mitochondria, including the outer membrane, inner membrane with cristae, and matrix, and describes the two stages of cellular respiration: the first in the cytoplasm without oxygen, breaking glucose into pyruvic acid, and the second inside mitochondria with oxygen, producing energy, water, and carbon dioxide. The lesson also introduces metabolism, differentiating anabolic (building up) and catabolic (breaking down) processes, and includes activities and experiments using limewater, methylene blue, and soda lime to observe gas exchange in plants. By the end, students should be able to distinguish between gas exchange and cellular respiration, identify mitochondrial structure, recognize the mechanism of cellular respiration, and differentiate anabolic and catabolic processes.