This document contains a diagram of metabolic pathways and biochemical reactions involved in cellular respiration and photosynthesis. Key molecules and processes depicted include the citric acid cycle, electron transport chain, oxidative phosphorylation, Calvin cycle, glycolysis, and various amino acid, lipid, carbohydrate and pigment metabolic pathways. The diagram shows the transfer and utilization of electrons, protons, and ATP between metabolic reactions located in the mitochondria and chloroplasts.