Khan Academy
Khan Academy: Prokaryote Structure
This tutorial gives an overview of prokaryotes (bacteria and archaea) along with an explanation of structural features of prokaryotic cells.
CK-12 Foundation
Ck 12: Biology: Prokaryote Classification
[Free Registration/Login may be required to access all resource tools.] Overview of classifying prokaryotes and prokaryotic domains.
CK-12 Foundation
Ck 12: Life Science: Archaea
[Free Registration/Login may be required to access all resource tools.] For many years, archaea were classified as bacteria. Like the bacteria, archaea lacked a nucleus and membrane-bound organelles and, therefore, were prokaryotic...
CK-12 Foundation
Ck 12: Life Science: Domains of Life
[Free Registration/Login may be required to access all resource tools.] Humans are in the same domain as trees and algae. What could they possibly have in common? It is the location of their DNA inside their cells. Their cells all have a...
CK-12 Foundation
Ck 12: Biology: Prokaryote Evolution
[Free Registration/Login may be required to access all resource tools.] An overview of the evolution of prokaryotes.
CK-12 Foundation
Ck 12: Life Science: Types of Archaea
[Free Registration/Login may be required to access all resource tools.] The first archaea described could survive in extremely harsh environments in which no other organisms could survive. As a result, archaea are often distinguished by...
University of Utah
University of Utah: Genetic Science Learning Center: The Evolution of the Cell
Learn about the endosymbiotic theory. This theory explains the evolution of cells from a mitochondria and chloroplast working together in a symbiotic relationship to the current cell structure.
Woods Hole Oceanographic Institution
Woods Hole Oceanography Institute: Bacteria at Hydrothermal Vents
Discover more about the thermophiles (bacteria) that live in hydrothermal vents ranging from the ocean floor to Yellowstone hotsprings.
University of Arizona
The Biology Project: Prokaryotes
A brief overview of the prokaryotes. The resource contains some interesting facts that will help you understand the great contrast that exists in the prokaryotic way of life.
PBS
Nova: The Lives of Extremophiles
An interview with a microbiologist who studies bacteria that decompose hydrogen sulfide gas and other noxious chemicals. The interview focuses on her research and her career.
BiologyWise
Biology Wise: Three Domains of Life
Describes the characteristics of Archaea, Bacteria, and Eukarya, the three domains of life.