Which tube represents what you would expect from each of the four organisms? (base your results on the descriptions of the individual organisms) (a) (b) (c) (d) (e) Oxic zone Anoxic zone C. sporogenes - tube _____ N. Sicca - tube _____ B. megaterium - tube _____ E. coli - tube _____ Questions 1. Complete the following chart Organism | Metabolizes oxygen | Growth in presence of oxygen | Growth in absence of oxygen | Detoxifies byproducts of oxygen Aerobe Facultative anaerobe Strict anaerobe Aerotolerant Microaerophile
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Aerobe: Grows in the presence of oxygen and metabolizes oxygen. Does not grow in the absence of oxygen. Show more…
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Four tubes are illustrated with cultures grown in a medium that slows oxygen diffusion. Match the culture tube with the correct type of bacteria from the following list: facultative anaerobe, obligate anaerobe, microaerophile, aerotolerant anaerobe, obligate aerobe.
Draw a thioglycolate culture tube. Label the regions in your culture tube that have 1) no to very low oxygen 2) high oxygen 3) low to moderate amounts of oxygen Label the regions where organisms use A) aerobic metabolism B) anaerobic metabolism C) fermentation Label the regions of the tube where each group will grow based on their oxygen requirements I. Obligate aerobe II. Obligate anaerobe III. Facultative anaerobe IV. Aerotolerant anaerobe V. Microaerophile obligate aerobes obligate anaerobes facultative anaerobes aerotolerant anaerobes microaerophiles A B C D E 1. Which organisms require oxygen for metabolism/growth? 2. Which organisms can tolerate oxygen (because they possess enzymes for detoxifying it)?
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