Last Minute Lecture

Diversity of Archaea — Methanogens, Hyperthermophiles, and the Asgard Lineage Explained | Chapter 17 from Brock Biology of Microorganisms The domain Archaea encompasses some of the most unique and ancient forms of life on Earth. Chapter 17 of Brock Biology of Microorganisms explores the incredible phylogenetic, metabolic, and ecological diversity within this domain. Despite their small numbers of cultured representatives, Archaea display remarkable adaptations—from extreme halophily to methane production and thermophily near the limits of life. This chapter categorizes Archaea into four major superphyla: Euryarchaeota, TACK, DPANN, and Asgard, highlighting their evolutionary relevance and functional innovations. Watch our detailed video summary below and subscribe to Last Minute Lecture for expertly crafted academic reviews of every Brock Biology chapter. Euryarchaeota — Metabolic Powerhouses Euryarchaeota is the most metabolically diverse archaeal superphylum, includin...

Bacteria and Archaea — Prokaryotic Diversity, Adaptation, and Ecological Roles Explained | Chapter 27 of Campbell Biology Welcome to Last Minute Lecture! In this post, we explore the fascinating world of prokaryotes—Bacteria and Archaea—as detailed in Chapter 27 of Campbell Biology . These single-celled organisms have shaped life on Earth for billions of years, evolving incredible diversity and essential ecological functions. Watch the full video summary below and subscribe for more clear, chapter-by-chapter biology study guides! Introduction: The Ubiquity and Importance of Prokaryotes Prokaryotes—encompassing Bacteria and Archaea—dominate Earth’s biosphere in both numbers and diversity. Despite their microscopic size, they are foundational to all ecosystems, influencing nutrient cycles, environmental adaptation, and human health. Cell Structure and Genetic Diversity Cell Structure: Prokaryotes lack a nucleus and membrane-bound organelles. Their cell walls differ, c...