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Science Education Resource Center at Carleton College
Serc: It Takes Teamwork: How Endosymbiosis Changed Life on Earth
A tutorial on symbiotic relationships that explores the differences between prokaryotic and eukaryotic cells as well as the origins of eukaryotic organelles possibly being from endosymbiotic relationship. This tutorial also offers...
Cold Spring Harbor Laboratory
Dna From the Beginning: Higher Cells Have Ancient Dna
Eukaryotic cells have separate DNA from mitochondria and chloroplasts which indicates that they were once primitive cells on their own. This multimedia article includes animations, pictures, video, biographical information, and quiz...
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: La Formas De Organizacion De La Vida
In this unit you will learn about the origin of the cells and their differences. It includes 15 interactive activities.