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The Microbial World

Chapter 1: Introduction to the Microbial World

TermDefinition
Virus An infectious agent consisting of DNA or RNA and surrounded by a protein sheath
Superbug A strain of bacterial species that has become resistant to multiple antibiotic drugs
Spontaneous Generation The doctrine that non-living matter could give rise to living things
Science The organized body of knowledge that is derived from observation and can be verified or tested
Protozoan A single-celled eukaryotic organism that lacks a cell wall
Prokaryotic cell Referring to cells that have a single chromosome but no cell nucleus or other membrane-bound compartments
Phytoplankton Microscopic free-floating communities of cyanobacteria and unicellular algae
Photosynthesis A biochemical process in which light energy is converted into chemical energy
Pathogen A microorganism or virus that causes disease in a host
Pasteurization A heating process that destroys pathogenic bacteria in a liquid and lowers the overall number of bacteria in the fluid
Microorganism A microscopic form of life
Kochs Postulates A set of procedures by which a specific organism can be related to a specific disease
Human Microbiome The community of microorganisms and viruses that normally reside on the surface of the skin and in the mouth, respiratory system, and genitourinary and gastrointestinal tract of the human body
Germ Theory of Disease The principle that microorganisms are responsible for disease
Fungus A general term that includes molds and yeasts
Eukaryotic cell A cell containing a membrane-bounded nucleus
Emerging Infectious Disease A new or changing disease that is seen within the population for the first time
Deoxyribonucleic Acid The genetic material of all cells
Decomposer An organism that breaks down dead or decaying matter
Cyanobacteria An oxygen-producing, pigmented bacteria occurring in unicellular of filamentous forms that carry out photosynthesis
Climate change The alteration in global temperatures and rainfall patterns that may occur due to increased levels of atmospheric greenhouse gases
Biotechnology The commercial application of genetic engineering using living organisms
Bioremediation The use of microorganisms to degrade toxic wastes and other synthetic products
Bacteria The domain of living things that includes all single-celled prokaryotic organisms not in Archaea
Archaea The domain of living organisms that excludes the Bacteria and Eukarya
Animalcule A microscopic organism observed by Leeuwenhoek
Alga bloom An excessive growth of algae on or near the surface of water, often the result of an oversupply of nutrients from organic pollution
Algae Organisms in the kingdom Protista that preform photosynthesis
Created by: drmicro