AP®︎ Biology Unit 3: Notes & Study Guide
Prepare for your quiz, test, or the AP exam with a comprehensive review on Unit 3 of AP Biology – Cellular Energetics.
Unit 3: Cellular Energetics
This unit dives into how cells capture, store, and use energy—through processes like photosynthesis, cellular respiration, and enzyme activity.
Begin with Topic 3.1: EnzymesTo review Unit 3, go through each of the 5 topics below.
Everything you actually need to know for your Unit 3 test, pulled directly from the AP® Biology curriculum.
Enzymes
Enzymes
- What Enzymes Are and What They Do
- Enzyme Structure and the Active Site
- How Enzymes Lower Activation Energy
Environmental Impacts on Enzyme Function
Environmental Impacts on Enzyme Function
- How Enzyme Structure Determines Function
- The Major Environmental Factors That Affect Enzyme Activity
- Enzyme Inhibition
Cellular Energy
Cellular Energy
- Energy in Living Systems
- Energy Coupling and ATP
- Sequential Metabolic Pathways
Photosynthesis
Photosynthesis
- What Photosynthesis Is
- Chloroplast Structure and Where Each Stage Happens
- The Light Reactions How Light Energy Becomes ATP and NADPH
Cellular Respiration
Cellular Respiration
- What Cellular Respiration Is
- The Stages of Cellular Respiration
- Mitochondrial Structure and Why It Matters
Notes
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