14072359
Description
Flashcards by Angus Cooper, updated more than 1 year ago
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Created by Angus Cooper
almost 6 years ago
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| Question | Answer |
| Define Microbiology | The study of microorganisms |
| Name some medically important microorganisms | Bacteria (Prokaryotic) Fungi (Eukaryotic) Parasites (Eukaryotic) Protozoa (Eukaryotic) |
| Name some medically important acellular organisms | Viruses Prions |
| What are the main components of a Prokaryotic organism | Cell Wall - peptidoglycan Cell membrane Genome (Nucleoid) Ribosomes - 70S No membrane-bound organelles |
| What are the main components of a Eukaryotic organism | Membrane-bound nucleus Membrane-bound organelles (Mitchondria, Golgi, E.R., etc.) Nucleolus Ribosomes - free (80S) Cytoskeleton - microfilaments, tubules |
| Main differences between Pro & Eukaryotic cells | Size, Nucleus (Eu), DNA (Linear - Eu), Membrane-bound organelles (Eu), size of ribosomes (Eu +), Cell wall (Pro). |
| Bacteria Name is broken down by? | Genus, Species & Strain. E.g., Escherischia (G), Coli. (S), 0157 (Strain) |
| Bacteria has a structure based on which two things? | Shape, and arrangement. E.g. Shape = spiral, circular, rod. Arrangment = singular, chain, cluster |
| Difference in staining for bacteria? | Gram positive = PURPLE, thick cell wall retains stain Gram negative = doesn't retain stain, counterstained to RED |
| Some gram positive bacteria can form what hardened structure? | Spores: which protect bacteria and allow bacteria to go into dormant state |
| Are all Bacteria pathogenic? | No, certain factors have to aline in order to cause pathogenesis. |
| What are prions? | Prions are infectious PARTICLES within your body, made up of misfolded prion protein. |
| Define pathogen? | When an organism gets through the various defences of the body to cause infection |
| Define infection? | When an organism enters the body, grows in number, and causes damage to the body. |
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