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33 Cards in this Set
- Front
- Back
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Define Pathogen |
A disease-causing microrganism |
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Define Normal Flora |
Normal bacteria that live in our body that our body needs |
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Define Transient Flora |
Flora that is not the bodies permeant flora that can colonise on the skin. Includes bacteria, fungi and viruses |
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Define opportunistic pathogens |
Harmless microorganism until given the right condition |
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Define Binary fission |
Method of reproduction by bacteria to create a new cell from an older cell. (1 splits into 2, 2 splits into 4) |
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Define Eucarocytes |
Anything with a true nucleus that replicate with sexual reprduction. -> fungi, algae, protozoa -> Humans, animals etc. |
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Define Procaryote |
A single celled organism -> BACTERIA |
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What is nomenclature and how is it done? |
A way of naming bacteria. -GENESUS/SPECIES (First letter of genesis & full species) -italics or underlined -Genesus with capital & species with lower case. ex. E.coli (italics) |
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Bacteria contain no ______ but contain ______ |
Nucleus Chromosomes/DNA |
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What temperatures do the following bacteria like: A. physchrophiles B. mesophiles C. Thermophiles |
A. 0-20 B. 20-40 C. 45-350 |
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What do the following like: a. Anerobic b. Aerobic c. Faculative anerobic |
a. does NOT like oxygen b. requires oxygen c. can switch/survive w both |
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a. What PH do bacteria like? b. What % of moisture do bacteria like? c. what will happen to bacteria if moisture is taken away from them? |
a. 7 b. >90% c. They will stop growing/dividing, but will not kill them |
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What are the phases of bacterial growth? |
Lag phase log phase stationary phase death phase -> more bacteria in the environment so they do less and eventually will die due to competition. |
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What are the four most common bacterial shapes? |
Bacilli (rod) Cocci (round) Spriochetes (spiral) diplococci (x2 kidney bean shaped) |
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Gram stain positive colour thick/thin cell membrane |
Purple pink Peptidoglycon layer |
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Gram stain negative Colour thick/thin Cell membrane |
pink thin Peptidoglycon layer |
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What is the purpose of the gram stain? |
Determine the chemical make-up of cell walls of bacteria |
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Viruses have ___ or ____ and _____ both |
RNA, DNA, NEVER |
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What are the most common three shapes of viruses? |
Helical (rectangle) Icoschaedral (round) Complex (alien/spaceship thing) |
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Can viruses duplicate on their own? |
NO |
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A long or short lived severe infection of sudden onset is what type of infection? |
Acute lytic infection |
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An infection with no symptoms is called what? |
Subclinical infection |
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A virus that hides until a trigger sets it off (e. coldsores) is called? |
Latent viral infection |
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A viral infection that the body can't get rid of is called what? |
Chronic infection |
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A cancer causing infection is called what? |
Oncongenic viral infection |
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Can viruses exhibit more that one property? Ex. both chronic and oncogenic? |
Yes |
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what is the name of fungi that require keratin for growth that cause infection on skin, hair and nails? Reservoirs= cats & dogs |
Dermatophyte |
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Dermatophytes are classified according to their location of the body. a. tinia pedis b. tinea corporis c. tinea cruris d. tinea capitis |
a. feet b.skin c. groin d.scalp |
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Yeasts are what kind of infections? |
oppourtinistic infections |
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What classification is protozoa? |
Eucaryotic cells - parasitic |
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What are parasites treated with? |
Antihelminthic drugs |
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What is the name of the tiny parasitc things that live off blood? |
Lice |
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What is the name of the contagrous skin diseasing causing infection caused by mites? |
Scabies |
