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  1. Copilot 答案

    Archaea is a domain of organisms. Traditionally, Archaea only included its prokaryotic members, but since this has been found to be paraphyletic, as eukaryotes are now known to have evolved from archaea. Even though the domain Archaea cladistically includes eukaryotes, the term "archaea" (sg.: archaeon /ɑːrˈkiːɒn/ ar-KEE-on, from the Greek "ἀρχαῖον", which means ancient) in English still generally refers specifically to … 展开

    Discovery and classification

    For much of the 20th century, prokaryotes were regarded as a single group of organisms and classified based on their biochemistry, morphology and metabolism. Microbiologists tried to classify microorganisms … 展开

    Prokaryotic phyla

    The following phyla have been validly published according to the Bacteriological Code:
    • Halobacteriota
    • Methanobacteriota
    • Microcaldota… 展开

    Origin and evolution

    The age of the Earth is about 4.54 billion years. Scientific evidence suggests that life began on Earth at least 3.5 billion years ago. The earliest evidence for life on Earth is graphite found to be biogenic in 3.7-billion-year-old … 展开

    Morphology

    Individual archaea range from 0.1 micrometers (μm) to over 15 μm in diameter, and occur in various shapes, commonly as spheres, rods, spirals or plates. Other morphologies in the Thermoproteota include … 展开

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