Cell theory

• Binomial system (Binomial nomenclature)


  • Bi-means 2 (to)
  • Nomial-means Pame
  • So binomial means to names
• Hierarchical classification


  1. Kingdom

  2. Phylum

  3. Class

  4. Order

  5. Family

  6. Species
• Genus name


  • Starts with capital letter (upper)
  • All other letters are small lowercase
• Species name


  All letters are small (lowercase)
• A species is the most basic unit of classification
• Hybrids


  • Crossing between horse and donkey produces seahorses and donkeys
• The discoveries about the cell demonstrate principles that apply to all living organisms
• Tenets of the cell theory

  • Cells are the basic structural units in organisms
  • All living organisms consist of one or more cells
  • All cells arise from pre-existing cells
• Tenet 1 established


  Mid 1600s
• Tenet 2 established


  Around 1840
• A hybrid is an offspring produced from the mating of two different species or varieties. In this context, it refers to the result of breeding a horse and a donkey.
• Hybrids

  
  
• Horse

  
  
• A large, muscular animal with a long face, mane, and tail.
• Donkey

  
  
• A smaller, more robust animal with a long face, ears, and a short tail.
• Crossing between horse and donkey


  
  
• When a male donkey (jack) is bred with a female horse (mare), the offspring is called a mule.
• Mule

  
  
• A hybrid resulting from breeding a male donkey (jack) with a female horse (mare). Mules are sterile and cannot produce offspring of their own.
• Seahorses