Ahad, 23 Mei 2010

type of cells

Types of Cells:


  1. Prokaryotic
  • Bacteria

  • Archaea











2. Eukaryotic

  • Unicellular
    Protists
  • Multi-cellular
    Fungi
    Plants
    Animals














Bacteria


Characteristics

  • Greek for "small stick"
  • Most Abundant Organism

  • Found in all Media

  • Many are Pathogens

  • Move by Flagella or by Gliding

  • Asexual Reproduction

  • Beneficial in Everyday Needs

Archaea

Characteristics


Greek for “old ones”
  • Identified in 1977 by Carl Woese of the University of Illinois at Urbana-Champaign and George Fox

  • Extremophiles

  • Mesophiles

  • Found in Living Organisms

  • Two Groups: Euryarchaeota and Crenarchaeota

  • Fungi

    Characteristics

    • All come from a common ancestor

    • Thought to be more related to animals then plants

    • Most are symbiotic

    • Lacks organs

    • Reproduce sexually or asexually

    • Many are used in everyday human life


    Plant Cells



    Characteristics


    • Has a cell wall made of cellulose

    • Has a large central vacuole

    • Undergoes photosynthesis

    • Contains Chloroplasts which contain Chlorophyll

    • The cells differentiate in to dermal tissue, vascular tissue, or ground tissue



    Animal Cells


    Characteristics



    Unicellular and Multicellular
  • Lacks a Cell Wall and Chloroplasts

  • Small Vacuoles

  • Appear spherical in shape

  • Contains a variety of Organelles
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