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This short slide set explains the uniformity of the Krebs cycle across all life using evolutionary theory. Save the slide set to your computer to view the explanation and notes that go along with each slide.
UC Museum of Paleontology
Use this resource to relate evolutionary concepts to the topic of the Krebs cycle (or get more suggestions for incorporating evolution throughout your biology syllabus). Incorporate these slides immediately after you’ve discussed aerobic respiration.
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details.
- Through billions of years of evolution, life forms have continued to diversify in a branching pattern, from single-celled ancestors to the diversity of life on Earth today.
- Present-day species evolved from earlier species; the relatedness of organisms is the result of common ancestry.
- The early evolutionary process of eukaryotes included the merging of prokaryote cells.
- An organism’s features reflect its evolutionary history.
- Similarities among existing organisms (including morphological, developmental, and molecular similarities) reflect common ancestry and provide evidence for evolution.