Completion 1. Microbes that grow only in the presence of oxygen are called.Those

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Completion 1. Microbes that grow only in the presence of oxygen are called.Those that grow only in the (two words needed). Those that are complete absence of oxygen are called capable of growth in both the presence and the absence of oxygen are called word) or (one (two words). 2. Anacrobes prefer or require a medium having aO/R potential. This value represents the extent to The most commonly used compound for adjusting the which the medium has been chemically O/R potential in this manner is 3. One way to eliminate oxygen from the atmosphere above liquid media in test tubes is to prior to incubating the culture. 4·The type of metabolism characteristic of strict anaerobes is called whereas is the type that is characteristic of strict acrobes. 5. The anaerobe jar and gas-generator package are used to provide a suitable environment for cultivation of 6. The gas-generator package generates two gases. These are and The first of and the these is important because it second gas is important because it True- False (correct all false statements) 1. Considering the three bacteria used in this experiment, Escherichia coli is the only one that grew like a strict aerobe. tubes that are filled to capacity, autoglaved, and then inoculated and sealed immediately after cooling 2. Scr are satisfactory for cultivating gas-producing facultative anaerobes 3. It takes about 6 minutes for all oxygen to be consumed inside the anaerobe jar after activating the gas-generating package and sealing the jar MacBook Air D F FS F6 F7

Explanation / Answer

The answers to the fill-in-the-blanks has been provided below. Answer to each blank has been provided in a different line. The sentences in brackets explain the answer ; they are not part of the answer.

1. aerobes

obligate anaerobes

aerotolerant

facultative aerobes (or facultative anaerobes)

2. low (lower redox potential os preferred because it implies lower oxygen concentration in the media)

reduced

sodium thioglycolate (it consumes the oxygen, permitting obligate anaerobes to grow)

3. pass hydrogen through the atmosphere above liquid media (it would combine with the oxygen in the empty space to form water, thus consuming the oxygen).

4. fermentation

respiration (or aerobic respiration)

5. obligate

6. hydrogen, carbon dioxide

reacts with the oxygen in the jar to create water as condensed water droplets

helps in the growth of a majority of anaerobes.

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