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25 Cards in this Set
- Front
- Back
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Micro
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Very small
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Microbiology
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Study of very small minute organism.
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Microorganisms
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A very small organism that is microscopic
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Microbes good or bad?
Why? |
Majority of microbes are essential to the balance of the global ecosystem.
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Marine Microbes
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Foundation of the food chain
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Soil Microbes
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Break down wastes and chemical elements are recycled.
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Algae and some bacteria
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Photosynthetic
oxygen/energy process |
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Intestinal bacteria
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Essential for digestion and synthesis of some vitamins
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Commercial/Industrial for microbes
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productions of chemicals, drugs, and foods
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Pathogens
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Microbes that cause disease
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Normal Microbiota/Normal Flora
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Microbes that inhabit the body but do not cause disease and are harmless
E.Coli Bacteroids Fragilis |
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Natural defenses which fight disease
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Immune system
Barriers: skin, mucous membranes, and stomach acids Natural Flora |
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When would disease and infection occur
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A balance between natural defenses and microbes usually avoid disease.
When our natural defense is suppressed or overwhelmed infection and diseases can then occur. |
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What is a Pathogen
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Disease causing microbe that invades a susceptible host
Hosts can be animals, humans, plants, and other microorganisms. Once inside a host pathogens replicates and establishes an infection - disease Can cause death or chronic suffering and treatment is antibiotics and other drugs, vaccines. |
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Plague/Black Death
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Yersina Pestis
Wiped out more than half of worlds population in 1300-1500 |
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Tetanus
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Clostridium Tetani
Killed more soldiers in WWI than did war injuries |
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Vaccination
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Jenner started it with inoculation with cowpox provided resistance against small pox.
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Chemotherapy/Drugs
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Treatment of disease using chemical substances
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Types of Chemotherapy/Drugs
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Synthetic drugs: chemically derived
Antibiotics: Derived from fungi or bacteria |
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Chemotherapy works how?
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The substance kills the microbe without causing serious harm to the host.
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Nonsocomial infections
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Infections you get from the hospital
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Mass production of penicillin
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Florey
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Discovered penicillin by accident
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Fleming
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Reemerging diseases
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Diseases that were thought to be under control.
Now a major health problems in the world Malaria and TB Bacterial antibiotic resistance Socioeconomic problems Loss of habitat Immunosuppressed individuals |
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Emerging Diseases
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New pathogens which cause new diseases
Crossing over species barrier Loss of natural habitat |
