How abundant are microbes on Earth How abundant are microbes inon .pdf

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How abundant are microbes on Earth? How abundant are microbes in/on our body? What are the domains of life? Viruses? What is LUCA? How did evolution shape our planet? Major components of cells from different domains. Know and understand the contributions of Hooke, van Leeuwenhoek, Cohn, Pasteur, Koch, Beijerinck, Winogradsky, and the Hesses to science and microbiology What did they want to do? How did they accomplish them? e.g. Koch\'s postulate, enrichment culture technique, etc. Solution 3. Life domains are 3 types: Those are 1. Eubacteria, 2. Archaea, 3. Eukarya; Viruses are semiliving organisms, in which, if host is absent, then virus is in non living, and host is present, virus are living 2. Human micro biota is aggrigates of micro organisms reside in the body. In human body the microbes and human cell ratios are in 3:1 4. LUCA = Last Universal Common Ancestor. From this LUCA three domains formed. Those are Eubacteria: Developed all modern bacteria, Archaea: Inxlude extremophiles and Eukarya: All eukaryotes origin. All three domain organisms form producers, consumers and decomposers that leads to ecological cycle 5. Eubacteria and archaea are prokaryotic in nature and lack nuclei, and membrane bound organelles. Present 70s ribosomes. Eukarya contain all nucleated organisms. They contain membrane bound organelles. Possess 80s ribosomes.

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