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Micro Midterm terms
| Term | Definition |
|---|---|
| abiogenesis | the development of living organisms from nonliving matter |
| airborne diseases | spread of pathogens by droplet nuclei other aerosols and dust that travel for more than 1 m from the reservoir to the host |
| algae | large and diverse group of simple organisms ranging from unicellular to multicellular forms containing chlorophyll that is needed for photosynthesis. Primarily aquatic organisms |
| animalcules | microscopic organisms "small animals" so named by van Leeuwenhoek |
| archaea | a group of single celled microorganisms that are similar to bacteria because they are prokaryotes but are evolutionary different |
| aseptic | free of microorganism's also using methods to protect against pathogenic microorganisms |
| bacteria | a large group of unicellular prokaryotic organisms |
| binomial | consisting of or relating to two names or terms |
| biofilms | microorganisms organized into complex communities of different organisms growing on a surface |
| bioremediation | any process that uses microorganisms or their enzymes to return the environment altered by contaminates to its original condition |
| classification | assignment of organisms into taxa on the basis of similarities |
| commensalism | symbiotic relationships in which one of the organisms benefits and the other is neither harmed or helped |
| compound microscope | a form of light microscope with ocular and objective lenses |
| dissection microscope | low power microscope designed for observing larger objects such as insects worms plants or any objects that may have to be dissected for further observation |
| domains | highest taxonomic rank of an organism |
| electron microscope | uses a beam of electrons rather than light as the source of energy to visualize specimens |
| endospores | a dormant tough nonreproductive structure that some bacteria can produce in response to unfavorable environmental conditions |
| eurkaryotic | organism whose cells contain a DNA containing nucleus and membrane bound cell organelles |
| foodborne diseases | generally involves pathogens in or on foods that are incompletely cooked poorly processed under unsanitary conditions |
| fungi | heterotrophic single celled multinucleated or multicellular organisms included yeasts molds and mushrooms |
| genera | usual major subdivision of a family or subfamily in the classification of organisms usually consisting of more than one species |
| genus | group of species closely related in structure and evolutionary origin the level of grouping falls between family and species |
| immunology | study of the genetic biological chemical and physical characteristics of the immune system |
| Koch's postulates | criteria to establish the causative agents of a specific disease |
| light microscopes | uses visible light spectrum to visualize a specimen |
| mutualism | symbiotic relationship in which both organisms benefits |
| nomenclature | deals with the rules for naming organisms |
| parasitism | one organisms benefits and the other doesnt |
| pasteurization | process o heating foods at a temperature and time combination intended to destroy harmful bacteria without changing the composition |
| pathogenic | ability to cause disease |
| phyla | classification of kingdom and class |
| phylogeny | deals with the evolutionary relationship between organisms |
| prions | infectious proteinoids particles that are neither cellular nor viruses' |
| prokaryotes | does not have a nucleus or membrane bound organelles |
| protozoans | unicellular eukaryotic usually chemohetero that live in ample water supply |
| stereomicroscopes | low power microscopes designed for observing larger objects such as insects worms plants or any objects |
| sterilization | destruction or removal of all microorganisms and their spores |
| stromatolites | masses of cells or microbial mats made up of fossilized photosynthesis |
| synergism | two chemicals or organism's that work together to form something greater |
| taxonomy | classification of living things |
| viroid | single stranded RNA molecule lacking a capsid that is an infectious agent |
| waterborne disease | disease spread by the transmission of water |
| acids | release hydrogen ions |
| ATP adenosine triphosphate | provides energy to the cell |
| anabolism | synthesis of large molecules from smaller ones |
| anions | negatively charged ions |
| atomic nucleus | center of atom contains protons and neutrons |
| atomic number | number of protons |
| atomic weight | protons and neutrons |
| atoms | unit of matter |
| bases | dissociates in water and releases hydroxyl ions |
| catabolism | breaks down larger molecules into smaller units |
| cations | positive charge ion |
| chemical bound | result of forces of attraction that hold together atoms |
| chemical compounds | consist of two or more different elements bonded together |
| chemical formula | chemical compound |
| cholesterol | steroid and alcohol |
| covalent bond | sharing of electrons between elements |
| dehydration synthesis | condensation |
| DNA | deoxyribonucleic acid |
| disaccharides | two monosaccharides combine with the water molecule |
| electrolyte | dissociates into free ions |
| electrons | negatively charged ions |
| elements | type of atom identified by atomic number |
| endergonic | chemical reaction that requires energy |
| exchange reactions | transfer the same molecules but in a different combination |
| hydrolysis | breaking down large molecules in the presence of water |
| hydrophilic | water loving compounds |
| hydrophobic | water repelling molecules |
| hypertonic | higher concertation of solutes |
| hypotonic | lower concentration of solutes |
| ionic bonds and ions | lossed or gained one or more electrons |
| isotopes | same number of protons different number of neutrons |
| molecules | two or more atoms linked together |
| nonpolar | without electrical charge |
| oxidation | loses one or more electrons |
| phospholipids | main component of plasma membranes |
| valence electrons | electron in the outermost shell |
| Van der Waals forces | weak attractions between molecules with polarity |