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• Plants and animals, including humans, are made of specialized cells, tissues, and organs that are organized into systems.
• Developments in medicine and medical technology can have social and ethical implications.
Microscope: The Tube That Changed the World
Cell Organelles
Crash Course Biology: Animal Cells
Crash Course Biology: Plant Cells
The Cell Cycle and Mitosis
Mitosis
What is Cancer?
Amoeba Sisters: Specialized Cells
Specialized Cells of the Human Body
Levels of Organization
Stem Cells
Digestive System
Components of Blood
National Geographic: The Heart
TedEd: The Respiratory System
Crash Course Biology: Circulatory and Respiratory Systems