AP® Biology

Introduction Cell homeostasis refers to the self-regulating processes by which cells maintain a stable internal … Read more

Introduction Cellular respiration is a fundamental process that allows cells to produce energy by converting … Read more

Introduction Photosynthesis is one of the most fundamental processes that supports life as we know … Read more

Introduction Cellular energy is the fuel that drives virtually every biological process, from basic cell … Read more

Introduction Enzymes are proteins that catalyze biochemical reactions, speeding up critical processes in cells. In … Read more

Introduction Enzymes are among the most fascinating molecules in biology. They are crucial for processes … Read more

Introduction Enzymes are at the heart of nearly every biological process, from digesting food to … Read more

Introduction Welcome to a key topic in evolutionary biology: the Endosymbiotic Theory. This concept not … Read more

Introduction Cellular metabolism is the incredible set of chemical reactions that powers all life processes. … Read more