Micro lesson 2-Student notes

Micro lesson 2-Student notes - Introduction to Microbiology...

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Introduction to Microbiology DEA 1135 Lesson 2: Classification and Structures of Microorganisms To safeguard against microorganism exposure in a dental office, a basic understanding of how pathogens pass from an infected person to a susceptible person is important: The following outline will enable the student to differentiate the various microorganisms: Microorganisms can be classified into 2 different cell categories: _________________ and _________________ Prokaryotes A name that reflects the ____________ of a nucleus in a cell Examples include: Bacteria, rickettsiae, chlamydinae and cyanobacteria Eukaryotes Have larger cells ____________ _______________ and complex internal structures. Examples include protozoa, fungi, plants and animals (including humans). Prokaryotic Vs. Eukaryotic Cells 1 Property Prokayotic Eukaryotic Size Small Larger Nucleus No Yes DNA One - small, circular Several - large, linear Organelles Few or none Many Cell wall Yes Yes – plants No – animals Cellular Organization Mainly Unicellular Multicellular
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What Makes a Cell? Smallest entity capable of ________________ life. Separated from the environment by a cell envelope. Always has a _______ ________________. Sometimes a cell wall. Contain internal structures. Requirements for Life Highly complex and organized. Possesses and use ___________ program. Produces more of them. Acquires and utilizes__________. Eliminate waste products. Carries out chemical reactions. Engages in mechanical activities. Responds to _______________. Regulates themselves. Who are these Microbes? 1. Algae 2. Protozoa 3. Rickettsiae 4. Fungi 5.___________ 6.Prions and Viroids 7.___________ Microbe Complexity: Least Complex Most Complex Prions Viruses Algae Insects Bacteria Viroids Protozoa Plants Fungi Animals 2
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1. Algae: May be unicellular, colonial or ___________________. _______________ or terrestrial. (In an aquatic environment, algae are a very important carbon dioxide fixer, oxygen supplier and food source). Mostly plant-like characteristics. Photosynthetic organisms. Great variety of types, but all contain chlorophyll. Some animal-like characteristics like phagocitosis of other organisms. __________________ and Dinoflagellates - type of marine algae that are a very important marine food source Examples of diseases caused from algae : Red tide - red-pigmented dinoflagellates reproduce in excess and fill the water with a rusty/red color. Red tides produce a toxin that is poisonous to humans and animals. The toxin concentrates in mussels, clam and scallops. When ______________ by humans it causes tingling numbness in lips, mouth, tongue and fingertips followed by lack of coordination and slurred speech and difficulty swallowing. No none antidote to the toxin Red tide is dangerous to swimmers who ingest it directly.
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This note was uploaded on 08/19/2011 for the course DEA 1135 taught by Professor Guilford during the Spring '05 term at Gulf Coast Community College.

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Micro lesson 2-Student notes - Introduction to Microbiology...

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