Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Anaerobic World (4.6 BYA) OXYGEN REVOLUTION Anaerobic Heterotrophic Bacteria Fermentation Anaerobic Photosynthetic Bacteria One Photosystem Aerobic Photosynthesis (Bluegreen "Algae") 3.5 BYA Two Photosystems & O2 released Aerobic World (<2.5 BYA) Krebs Cycle evolved, ozone layer developed, land could be occupied Eukaryotes Evolved No oxygen in the atmosphere; No ozone layer, UV radiation bombards earth Organic Soup Origin of Life PROTISTA The first Eukaryotes Problems for Protista Who are the Protista? Where did they come from? How did their structures evolve? How did sex evolve?...
View Full Document

This note was uploaded on 12/09/2009 for the course BIO 200 taught by Professor Herreid during the Spring '07 term at SUNY Buffalo.

Ask a homework question - tutors are online