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16 Cards in this Set
- Front
- Back
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Who introduced the term cell
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Robert Hooke 1665
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First to observe microorganisms
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Anton Van Leeuwenhoek using simple microscope 1673
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Who disproved Spontaneous Generation
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Louis Pasteur- disproved lorganisms may arise from lifeless matter such as beef broth
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Who discovered germ theory
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Louis Pasteur Microorganisms cause diseases
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Discovery of Immunity
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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.
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Who proved pasteurs germ theory of experimentation with anthrax disease
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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. |
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Viruses
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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 |
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Development of Chemotherapeutic Agents
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Search for substance that could destroy pathogenic microorganisms with damaging the infected animal or human.
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Who discovered first synthetic drug
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Erlich(magic Bullet)_could hunt and destroy pathogen without harming infected host.
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Prokaryotes vs Eurkayotes
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Prokaryotes
a. Bacteria b. Cyanobacteria |
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Bacteria
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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 |
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Cyanobacteria
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OIxysgen producting photoautotrophic (use light for energy
Green Algaek |
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Archaeobacteria
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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. |
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Eukaryotes
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Cell have dna inside distinct membrane enclosed nurleus.
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Eukaryote
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Protista- slime , molds, protozoa algae.
Fungi-unicellular yeast, multicellular molds & mushrooms plants- mosses, ferns, conifers, flowering plants animals- sponges, worms, insects, vertebrates |
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Viruses
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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. |
