Micro Lec

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Ubiquitous

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1. A word used to sum up the presence of microbes

2. Being, or seeming to be, everywhere at the same time

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Microbiology

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A specialized area of biology that deals with tiny life forms that are not readily observed without magnification (microscopic)

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Microscopic

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Not readily observed without magnification

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Microorganisms

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Also referred to as microbes, germs, bugs as to their role in infection

Microscopic organisms

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Name the major groups of microorganisms in microbiology

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1. Bacteria

2. Viruses

3. Fungi

4. Protozoa

5. Algae

6. Helminths ( parasitic worms )

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6

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Name for parasitic worms

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Helminths

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Nature of microorganisms in reference to studying

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Easy- b/c they reproduce so rapidly and can usually be grown in lrg #s in a lab

Hard to- b/c we cant observe or analyze them without special techniques like and espec. Use of microscope

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Geomicrobiologists

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Focus on the roles of microbes in the development of earth's crust

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Marine microbiologists

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Study the ocean and its smallest inhabitants

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Medical technologists

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Do tests to help diagnose pathogenic microbes and their diseases

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Nurse epidemiologists

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Analyze the occurrence of infectious diseases in hospitals

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Astrobiologist

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Studies the possibilities of organisms in space

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Scientists looking for life on other planets first

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Look for signs of microorganisms

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Fossil record in ancient rock and sediments suggest

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Bacteria-like cells having existed on earth for at least 3.5 billion yrs

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Early microorganisms

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1. Dominated earth's life forms for 2 billion yrs

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Nucleus aka

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Karyon

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Prokaryotic

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1. Genetic material of the cell not bound to a seperate compartment or nucleus

2. Ancient cells

3. Meaning before the nucleus

4. Lack organelles which are stuctures in cells bound by one or more membranes

5. Smaller than eukaryotic

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Ancient cells

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1. Small, simple, lacked specialized internal structures to carry out their functions

2. Prokaryotic

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Organelles

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Various specialized structures including a nucleus

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More complex cell from the prokaryotes

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1) abt 1.8 billion yrs ago

2) had nucleus and other organelles

3) eukaryotes

4) evolved from prokaryotes through endosymbiosis

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Eukaryotes

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1. True nucleus

2. Have organelles and a nucleus

3. Evolved from prokaryotes through endosymbiosis

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Endosymbiosis

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Way eukaryotes evolved from prokaryotes

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Early eukaryotes

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Prob sim to algae and protozoa started evolution lines to fungi, plants, and mulitcellular organisms

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Name the cell type

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Name the cell type

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Eukaryotic

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Name the structures

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Similarity of cell wall and cell membrane

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Both maintain cell integrity