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In laboratory conditions, certain biochemical reactions or tests denoted as vcr can be done upon unknown microorganisms denoted as mo to identify their name.
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Some of the biochemical reactions are tests that are done are gram -staining, which broadly categorizes the microorganisms into two times.
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One are gram positive and other are the gram negative.
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Other test is oxidase test.
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This test is done to find whether our unknown microorganism is producing the enzyme cytochrome c oxidase which in the electron transport chain are involved in aerobic respiration.
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The third test is the nitrate reduction test.
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This test is done to find whether a unknown bacteria can reduce nitrite or nitrite.
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Nitrate or not, that is, by reducing nitrate, it produces nitrate reductase denoted as nr or nitrite reductase.
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Based on the given question, our unknown microorganism produces a pink color during gram staining, which denotes that they are gram negative bacteria...