Question: Using the indole test, what does the tube with the pink top indicate? - The bacteria is able to convert tryptophan into indole - The

Using the indole test, what does the tube with the pink top indicate?
- The bacteria is able to convert tryptophan into indole
- The bacteria is able to ferment indole but only under high oxygen concentrations
- The bacteria is able to create amylase for the breakdown of indole
- The bacteria is able to use indole as its sole carbon source.

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