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LS FBTP Chapter 1

Bacteria

QuestionAnswer
Prokaryota Single-celled creatures with no membrane-bound organelles. Eubacteria and Archaebacteria belong to this group.
Cocci Spherical-shaped bacteria.
Bacilli Rod-shaped bacteria.
Spirilli Corkscrew-shaped bacteria.
Flagellum Whip-like tail used to move about.
Tumbling Motility The manner in which some single-celled creatures move. Forward movement with "tumbles" which are used to change direction.
Fission A process of reproduction in which one cell divides to form two identical "daughter" cells.
Aerobe (or obligate aerobe) A creature that requires oxygen to live. These creatures respire for energy.
Anaerobe (or obligate anaerobe) A creature that cannot tolerate oxygen in the environment. These creatures ferment for energy.
Facultative anaerobe A creature that can live in oxygen or without it. These creatures can either respire or ferment for energy. they prefer to respire.
Archae More primitive form of bacterial life; found in the earliest rock record. Often, these are adapted to the harshest of environments. Sometimes called extremophiles.
Saprophyte A creature that consumes dead and/or decaying organisms for food.
Pathogen Any organism that causes disease.
Endospore Thick-walled structures made by some bacteria in response to an environmental stress. When conditions are favorable, the bacteria may emerge from the spore state and continue its life cycle..
Vaccine Medicine which helps your body recognize and kill bacterial pathogens.
Gram Positive A group of Eubacteria with a thick cell wall and one cell membrane. Stain purple with Gram stain.
Gram Negative A group of Eubacteria with a thin cell wall sandwiched between two cell membranes. Stain pink with Gram stain.
Peptidoglycan Chemical that forms the cell wall material in prokaryotes. Also known as Murein.
Staph Bacteria that group themselves in clusters.
Strep Bacteria that group themselves in chains.
Diplo Bacteria that group themselves in pairs.
Monotrichous Refers to cells with one flagellum, found at one end of the bacterium.
Polytrichous Refers to cells with multiple flagella, in various arrangements around a cell.
Colony Morphology Describes the form, elevation, color, and other properties of bacterial colonies.
Colony A genetically identical "pile" of bacteria which all have the same single parent cell.
Colony Form The shape of a bacterial colony when viewed from above.
Antibiotics A chemical compound that is used to stop or inhibit the growth of microorganisms.
Toxin A poisonous substance
Microaerophilic A creature that requires a small amount of oxygen to live. Too much oxygen kills it. No oxygen also kills it.
Aerotolerant A creature that ferments, but can tolerate oxygen. These have no preference for oxygen in the environment.
Monera An older term which referred to the kingdom bacteria. It is largely abandoned in favor of a 3 domain system.
Extremophiles Creatures that "love" extreme conditions. These can grow in extremes of salt, heat, cold, acidity, etc.
Bioremediation The use of bacteria to repair contamination of soils or other natural habitats.
Created by: MrGross