What could you expect if older thioglycollate medium was used? (Select all that apply.)

A. Fastidious bacteria would be unable to grow.
B. Strict anaerobes may not be detected.
C. Obligate aerobes would grow less than expected.
D. Microaerophiles would grow less than expected.
E. Aerotolerant anaerobes would be unable to grow.



Answer :

Final answer:

Old thioglycollate medium can impact the growth of bacteria with varying oxygen requirements such as strict anaerobes, obligate aerobes, and microaerophiles.


Explanation:

Old thioglycollate medium can give inaccurate data. If older thioglycollate medium was used, you could expect that:

  1. Strict anaerobes may not be detected as they require an oxygen-free environment to grow.
  2. Obligate aerobes would grow less than expected since older thioglycollate may not provide the optimal oxygen levels for their growth.
  3. Microaerophiles would grow less than expected as they require specific oxygen concentrations that might not be met in older thioglycollate.

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