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  1. Microorganism - Wikipedia

    Microbes are essential tools in biology as model organisms and have been put to use in biological warfare and bioterrorism. Microbes are a vital component of fertile soil. In the human body, …

  2. What Are Microbes and What Do They Do? - Biology Insights

    Microbes are microscopic organisms that exist in vast numbers all around us and within us. These tiny life forms play a profound role in sustaining life on Earth. They are ubiquitous, found in …

  3. Facts About Microbes | American Museum of Natural History

    Microbes are organisms that are too small to be seen without using a microscope, so they include things like bacteria, archaea, and single cell eukaryotes — cells that have a nucleus, like an …

  4. What are Microbes? - University of Utah

    We need to use a microscope to see them. The term is very general. It is used to describe many different types of life forms, with dramatically different sizes and characteristics: The human …

  5. Microbiology | Definition, History, & Microorganisms | Britannica

    Dec 4, 2025 · microbiology, study of microorganisms, or microbes, a diverse group of generally minute simple life-forms that include bacteria, archaea, algae, fungi, protozoa, and viruses.

  6. Microbiome science: Understanding your body’s microbes and …

    Jan 6, 2026 · There are five main types of microbes — bacteria, archaea, viruses, fungi, and protists. They are all found in and on the human body; this is your microbiome! Bacteria …

  7. Misunderstood Microbes - Education

    Oct 19, 2023 · Microbes are organisms that cannot be seen with the naked eye. They include bacteria, archaea, protists, viruses, prions, and fungi. They account for most of the diversity of …

  8. What Is Microbiology? Exploring the Microscopic Life That Powers …

    Aug 4, 2025 · Most microbes on Earth have never been cultivated in a lab. They are part of the microbial “dark matter”—unknown species with unknown roles, perhaps holding secrets to …

  9. What Are Microbes? An In-depth Definition - BNS Institute

    May 18, 2025 · Microbes are tiny living things found all around us, too small to be seen with the naked eye. Also known as microorganisms, they require microscopes to be observed and …

  10. What is microbiology? | Microbiology Society

    Microbes, which are also called micro-organisms, are a group of organisms that are too small to be seen with the naked eye. Despite being even smaller than the human cell, microbes still …