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Microbiology

CCM Biology

TermDefinition
Heterotrophs Organisms that can't make their own food
Autotrophs Organisms that make their own food
Pathogenic Disease-causing
Plasmids Small pieces of DNA containing only a few genes
Spores Thick-walled structures which allow bacteria to survive unfavourable conditions
Binary fission Form of asexual reproduction in a bacterial cell
Photosynthetic bacteria Bacteria that make their food using sunlight
Chemosynthetic bacteria Bacteria that make their own food using energy from a chemical reaction
Saprophyte Organisms which get their food from dead organisms
Symbiotic organisms Organisms of one species living in a close relationship with a second species where at least one organism benefits
Parasitism Two organisms of different species living together, where one benefits and causes harm to the other
Antibiotics Chemicals produced by microorganisms that are toxic to bacteria
Sterile Free from all microbes
Asepsis Excluding microbes from as much of the environment as possibe
Prokaryotic Cell with no membrane-bound nucleus or cell organelles
Eukaryotic Cell with a true nucleus and membrane-bound cellular organelles
Continuous flow method Production in which microbes are maintained in the log phase of growth by the addition of fresh medium
Batch flow method Production in which fixed amounts of nutrients are added to a bioreactor which is emptied of its contents at the end of production
Mycelium Mass of hyphae
Chitin Structural polysaccharide found in fungi cell walls
Rhizopus Bread mould
Gametangium Structure that produces gametes in Rhizopus
Budding Form of asexual reproduction in yeast
Pseudopodia False feet found in amoeba used for movement and to engulf prey
Contractile vacuole Structure in amoeba used for osmoregulation
Created by: denisec08