Biology Ch. 18 Bacteria Notes - Marissa Ecumcom slimlio...

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Unformatted text preview: Marissa Ecumcom / slimlio BACTERIA NOTES — Chapter 18 ‘ Prokaryotes: El M’igrosgcgp’ig life covers nearly every square centimeter of Earth III There are many different sizes and shapes of M < x l The smallest and most common microorganisms are l Exam 95:53 are single-celled microorganisms that lack a m gclgog and are smaller than most Eukaryotes Classifying Prokagotes: El Prokaryotes can be divided into :1: 55);) very different groups: 1. '[—;5 gmctgfg} El Cell walls made of peptidoglycan (a carbohydrate) 2_ E I 1 E : r.;-\ III Cell walls lack peptidoglycan III DNA sequence resembles that of Eukaryotes El Prokaryotes are identified in the following ways: 1- W 2. be gbcDng) acuier éflfiém :8” cans 3. fig: gaggas in?” mane 4- Prokagyotic Shapes: Bacilli: rod-shaped prokaryotes wan—p, 2% Cocci: spherical prokaryotes ~\ Spirilla: spiral or corkscrew shaped prokaryotes .————.—.—.—p L. Carnes Prokagyotic Cell Walls: . II] Two different types of cell walls are found i l («gm — gag-133% : absorb violet dye and stain purple under a microscope i l (3‘ mm 9995 Qt‘wc : absorb red dye and stain reddish/pink under a microscope Prokagyotic Movement: El Most prokaryotes do not move at all, however, those that do will use one of three types of movement: _1. gm‘flgd PM 905,94,“ §gqggng 2. l O( ‘ 3. gym-3g gawk” Q’tggg o. nggeg 9;? gymag‘t‘ug: mama/10A M 56c (666 Obtaining Energy: El Some bacteria are Q5 mega S : I flfiggnmtggfizbg : carry out photosynthesis I Ch emgg é )tofig th : obtain energy from inorganic molecules - El Some bacteria are 3.: gflgo $193333 : l ' l Obtain energy by taking in organic molecules and then breaking them down I Eb Qggh (175311109 [1 S : are photosynthetic but also need organic compounds for nutrition Ext V0303 gap Oxygen Needs in Prokagyotes: El Obé‘yggfl ggggbgg : require a constant supply of oxygen in order to live Ex: hom‘fi El Eng-be Ema exam 3 : are poisoned by oxygen — dolnot require it to live El Ea“ 2105 ,g Aflqgfgbeg : can survive with or without oxygen ________._._._..__‘__'_______ Growth & Reproduction in Prokagyotes: III a D9 E! 5 gigs ,QQ : a method of reproduction in which a prokaryote replicates its DNA and divides in half producing 2 identical "daughter cells” ) m3 (genetic; variation '} \Jc El g an}! Q‘Ejfi : the transferring of genetic information fromone prokaryote to another _ . . 09¢qu th “0- El the process of producrng a thick Internal wall that allows the \ prokaryote to remain dormant for long periods of time while conditions are unfavorable for 3’: reproduction; can mascot; mama 5mm antwflotlcs L.Carnes ...
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