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16 Cards in this Set

  • Front
  • Back
Who introduced the term cell
Robert Hooke 1665
First to observe microorganisms
Anton Van Leeuwenhoek using simple microscope 1673
Who disproved Spontaneous Generation
Louis Pasteur- disproved lorganisms may arise from lifeless matter such as beef broth
Who discovered germ theory
Louis Pasteur Microorganisms cause diseases
Discovery of Immunity
Edward Jenner Inoculated girl with cowpox material. by scratching the persons arm with a pox contaminated needle. scratch turned into a raised bump. few dayhs girl became mildly sich but recovered and never again contracted cowpox or smallpox.
Who proved pasteurs germ theory of experimentation with anthrax disease
Koch's postulates-
1. Same organism observed in every case of disease.
2. Organisms isolated and cultured outside body of sick animal.
3. Organism injected into healthy animal
4. An identical microorganism is isolated from newly sick animal.
Viruses
Are noncellular entities that are parasites of cells
Viruses consist of a nucleic acid core (DNA or RNA0 surrounded by a protein coat. An envelope may surround the coat.
Can only be seen with electron microscope.
Not prokaryoteic or Eukaryotic
Development of Chemotherapeutic Agents
Search for substance that could destroy pathogenic microorganisms with damaging the infected animal or human.
Who discovered first synthetic drug
Erlich(magic Bullet)_could hunt and destroy pathogen without harming infected host.
Prokaryotes vs Eurkayotes
Prokaryotes
a. Bacteria
b. Cyanobacteria
Bacteria
1.Bacteria are unicellular
2.No nucleus
3.Bacillus (rodlike
4.Coccus (spherical
5.spiral(corkscrew curved)
Bacteria are enclosed in cell walls composed of Peptidoglycan . They reporduce by K"binary fission" Swin by using flagella
Cyanobacteria
OIxysgen producting photoautotrophic (use light for energy
Green Algaek
Archaeobacteria
No peptidoglycan found in extreme environments. Divided in to 3 groups
Methanogens- produce methane
halophiles live in extremely salt environment
Extreme thermophiles- Live in hot sulfurous water.
Eukaryotes
Cell have dna inside distinct membrane enclosed nurleus.
Eukaryote
Protista- slime , molds, protozoa algae.
Fungi-unicellular yeast, multicellular molds & mushrooms
plants- mosses, ferns, conifers, flowering plants
animals- sponges, worms, insects, vertebrates
Viruses
Only be seen through electron microscope.
Either Rna or Dna
Viruses can reporduce onlyo by using the cellular machinery of other organisms.
All viruses are parasites of other forms of life.