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20 Cards in this Set
- Front
- Back
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Microorganism
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An organism that is microscopic in size
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Microbiology
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study of microorganisms
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Germ
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Something that is a seed for more growth
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Infection
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Colonization - invasion - multiplication of a microorganism in a host. Causes damage
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Infectioius Agent
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An organism that could cause infection
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Infestation
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Overwhelming numbers. Usually parasites
-cause damage in host by competing for nutrients |
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Contamination
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Unclean - impure. Mixing or contact
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Infectious
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Can cause infection. Ability of the microbe to cause infection. How many can cause infection
-how well it causes disease in small numbers. |
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Contagious
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The ability to be TRANSMITTED. Can be transmitted very rapidly and easily by direct or indirect means.
-how quickly it can be spread from person to person |
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Pathogenic
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Causes pathology (disease)
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Virulent
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Aggressive - causes more damage. Referrers to the pathogen's ability
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Virus
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Non-cellular - can't replicate or undergo metabolism of its own
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Bacteria
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prokaryotic - single cells, does not have a nucleus
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fungus
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eukaryotic, heterotrophic
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parasite
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eukaryotic - symbiotic relationship with host where host is harmed
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Virus
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Non-cellular - can't replicate or undergo metabolism of its own
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Taxonomy
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Art of grouping similar organisms to facilitate differentiating them.
To help communicate about known organisms and help us understand newly discovered ones |
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classification
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Cellular structure
morphology biochem composition nucleic acids (DNA/RNA) All living organisms fall into pro/eukaryotes |
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Prokaryotes
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Simple internal structure
No membrane or nucleoli (no nucleus) NO organelles Contains a chemically complex cell wall NO cytoskeleton Binary Fission for cell division Little mRNA processing 70S ribosomes single DNA chromosomes 20-30 min division rate |
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Eukaryotes
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Complex internal structure
True nucleus that is membrane bound Contains Organelles Chemically simple cell wall if present Has a cytoskeleton Mitosis/Meiosis for cell division Extensive mRNA processing 80S ribosomes multiple linear histone DNA chromos 10-24 hr division rate |
