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Published byIsaac Hodges Modified over 9 years ago
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THEY ARE EVERYWHERE!!! Name:_____________________________Class:________Date:________ #_____A HO
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_______________ : outer covering that protects the cell Cell Membrane Controls what goes in and out of the cell (also called ______________ membrane)
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Cytoplasm ________-like material inside the cell membrane Ribosomes Chemical factories where ___________are produced ____________ Genetic material Contains instructions for all of the cell’s functions
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Flagellum Plural Flagella Long, whip-like structure to help cell ______________ May have many, 1, or none Most _________have any & are carried from place to place by: ______________ Water currents Other objects
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_________(Coccus) Spherical
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Bacilli (Bacillus) _______-shaped
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Spirilla (Spirochetes) ___________Shaped
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PROKARYOTES - do not have an organized __________________ Most known prokaryotes are _______________________ Archaea (________known) Can move Get energy Can reproduce (usually asexually) Very small and simple _________________- have an organized nucleus US!!!!!!
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When bacteria have: 1. Plenty of ________________ 2. Correct temperature 3. Suitable conditions they thrive and ______________frequently. Some can reproduce as often as every 20 minutes!!!!!!
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Asexual Involves only ___________ parent and produces offspring identical to the parent Most bacteria reproduce this way- it is called _______________FISSION 1. Cell enlarges 2. Cell duplicates _____________ 3. Cell and DNA copy start to separate 4. Cell divides into 2 separate cells (________________)
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Sexual _________parents combine their genetic material to produce a new organism, which differs from both parents ______________________occurs Have to be really special conditions Called: CONJUGATION http://www.youtube.com/watch?v=O- EdX4MaMFE http://trc.ucdavis.edu/biosci10v/bis10v/ week7/bacterial_conjugation.mov
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Endospore Formation Sometimes conditions are harsh for bacteria to survive Form Endospores for survival ____________________- small, rounded, thick-walled, restless cell that forms inside a bacterial cell Contains cells genetic material & ___________________
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Bacteria must have: A source of food A way of breaking down the food to release its energy Bacteria are classified on how they get their _____________________
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Autotroph (__________________) Make their own food: 1. Capture and use ____________energy (like plants do) 2. Use energy from _______________substances in their environment to make food Examples: bacteria in pond cause the green cloudy scum in water, bacteria in hot springs use chemical energy to make food Heterotroph (_________________) Consume other organisms or the food other organisms make Example: bacteria in yogurt breaks down the sugars in milk for food ______________________ Break down and feed off of dead organisms Saprophytes Break down dead leaves in the fall
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Don’t all have a cell ____________ 3 types _________________lovers Found in really hot environments Ocean vents, hot springs, geysers _________________lovers Found in areas with high salt content Oceans, The Dead Sea, Great Salt Lake _________________lovers Found in swamps or animal intestines Really stinky!!
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