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Microorganisms & Bacteria

Microorganisms & Bacteria. Section 1.1-4. Microorganisms. Very small, living things that you need a microscope to see Three kingdoms include microorganisms Archaea Bacteria Protists . Characteristics of living things. Organization (cells) Growth Reproduction Response.

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Microorganisms & Bacteria

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  1. Microorganisms & Bacteria Section 1.1-4

  2. Microorganisms • Very small, living things that you need a microscope to see • Three kingdoms include microorganisms • Archaea • Bacteria • Protists

  3. Characteristics of living things • Organization (cells) • Growth • Reproduction • Response

  4. Needs of Living Things • Energy • Materials • Living space

  5. Viruses • Genetic material enclosed in a protein shell • Viruses are not living things • Not as complex as a cell • Do not take in energy • Do not grow once formed • Cannot reproduce by themselves H1N1 virus

  6. Viruses • Multiply inside living things (hosts) • Attachment • Injection • Production • Assembly • Release Host is usually damaged or destroyed

  7. Bacteria • Simplest kind of life on Earth • Single celled • Do not contain a nucleus • Classified by shape Spiral RodRound

  8. Bacteria • Producers - make own food • Contain chlorophyll • Perform photosynthesis • Decomposers – break down dead or decaying material • Recycles material • Parasites – live in or on other organisms

  9. Bacteria • Helpful • Release oxygen into the air • Recycle materials • Clean up sewage and oil • Make materials useful (Nitrogen fixing) • Harmful • Cause disease

  10. Archaea • Single-celled organisms that can survive in the largest range of environments. Do not contain a nucleus. • Methanogens – produce natural gas. Can not live in oxygen • Halophiles – live in very salty water • Thermophiles – live in extreme heat or cold

  11. Protists • Organisms with a nucleus that do not belong to animal, plant or fungi kingdom • Most live in water • Most are single-celled • Have simpler structures

  12. Protists • Algae – plant-like protists (photosynthesis) • Plankton – organisms that drift (not swim) in water • Protozoa – animal-like protists (eat others) • Decomposers – absorb food from environment (molds)

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