University of Oxford (UK)
Univeristy of Oxford: Self Sustaining Chemical Systems: Living Cells
36-page tutorial takes a look at the organization of living cells.
Libre Text
Uc Davis Geo Wiki: Biogeochemical Evolution
Present evidence suggests that blue-green algae, and possibly other primitive microbial forms of life, were flourishing 3 billion years ago. This brackets the origin of life to within one billion years. Learn more here about...
Sophia Learning
Sophia: Microbes: Bacteria: Lesson 3
This lesson explains the existence and importance bacteria. It is 3 of 4 in the series titled "Microbes: Bacteria."
Sophia Learning
Sophia: Microbes: Bacteria: Lesson 4
This lesson explains the existence and importance bacteria. It is 4 of 4 in the series titled "Microbes: Bacteria."
Sophia Learning
Sophia: Microbes: Bacteria: Lesson 1
This lesson explains the existence and importance bacteria. It is 1 of 4 in the series titled "Microbes: Bacteria."