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CH 9 SEC 2 BACTERIA THE BACTERIAL CELL • KEY- THERE ARE BILLIONS OF BACTERIA ON EARTH. • KEY- THEY ARE EVERYWHERE. THERE ARE MORE BACTERIA IN YOUR MOUTH THEN THERE ARE PEOPLE ON EARTH • KEY- THEY ARE FOUND UNDER ROCKS, IN THE AIR, IN DEEP OCEAN VENTS, ON MOUNTAIN TOPS, AND ALL OVER YOUR BODY! BACTERIAL CELL • KEY- THEY WERE DISCOVERED BY LEEUWENHOEK LOOKING AT SCRAPINGS FROM HIS TEETH • KEY- BACTERIA ARE PROKARYOTES (CELLS WITHOUT A NUCLEUS). • KEY- THE GENETIC MATERIAL IN THEIR CELLS IS NOT CONTAINED IN A NUCLEUS. Cont’d • KEY- A BACTERIAL CELL LACKS MANY OTHER STRUCTURES THAT CELLS HAVE LIKE MITOCHONDRIA AND GOLGI BODIES • MOVEMENT- SOME BACTERIA USE A FLAGELLUM (PLURAL FLAGELLA), A LONG WHIP LIKE STRUCTURE THAT HELPS A CELL TO MOVE IDENTIFY FLAGELLEM SIZES AND SHAPES • KEY- BACTERIA VARY GREATLY IN SIZE • KEY- MOST BACTERIAL CELLS HAVE ONE OF THREE BASIC SHAPES: SPHERICAL, RODLIKE, AND SPIRAL IDENTIFY SHAPES • SKETCH AND LABEL FIGURE 6 ON THE TOP OF PAGE 326 BASIC BACTERIA SKETCH OBTAINING FOOD AND ENERGY • KEY- BACTERIA MUST HAVE FOOD SOURCE AND A WAY OF BREAKING DOWN THE FOOD TO RELEASE ITS ENERGY. • AUTOTROPHS- SOME BACTERIA ARE AUTOTROPHS AND MAKE THEIR OWN FOOD • EX- PLANT LIKE BACTERIA USE SUNLIGHT TO MAKE THEIR OWN FOOD • HETEROTROPHS- BACTERIA THAT DOESN’T MAKE ITS OWN FOOD. • KEY- INSTEAD THESE BACTERIA CONSUME OTHER ORGANISMS OR THE FOOD ORGANISMS MAKE. • EX- THE BACTERIA THAT HELPS LEAVES DECAY ON THE FOREST FLOOR RESPIRATION • RESPIRATION- IS THE PROCESS BY WHICH BACTERIA BREAKS DOWN FOOD USING OXYGEN FOR ENERGY Reproduction • KEY- WHEN BACTERIA HAVE ENOUGH FOOD, THE RIGHT TEMPERATURE, AND OTHER SUITABLE CONDITIONS THEY THRIVE AND REPRODUCE FREQUENTLY • http://app.discoveryeducation.com/search ?Ntt=BACTERIA&N=4294939055 REPRODUCTION • KEY- THERE ARE TWO WAYS IN WHICH BACTERIA CAN REPRODUCE • 1. ASEXUAL REPRODUCTION- A PROCESS THAT INVOLVES ONLY ONE PARENT AND PRODUCES OFFSPRING THAT ARE IDENTICAL TO PARENT. • 2. SEXUAL REPRODUCTION- TWO PARENTS COMBINE THEIR GENETIC MATERIAL TO PRODUCE A NEW ORGANISM WHICH DIFFERS FROM BOTH PARENTS Brain Pop • http://www.brainpop.com/health/diseasesin juriesandconditions/viruses/ • http://www.brainpop.com/science/diversity oflife/bacteria/ • http://www.brainpop.com/health/diseasesin juriesandconditions/antibioticresistance/
