Engage your AP Biology students with these interactive, visually appealing notes for Unit 4: Cell Communication and Signal Transduction! This resource blends the creativity of coloring notes with the structure of traditional fill-in notes, helping students see and understand key biological processes. Perfect for introducing, reviewing, or reinforcing AP Bio Unit 4 concepts — both in the classroom and online. What’s Included Editable Google Slides version for digital or remote learning Printa