Question

The incubators used to culture mammalian cells are maintained at:

• A. 30% $CO_2$
• B. 2% $CO_2$
• C. 5--10% $CO_2$
• D. 15--20% $CO_2$

Hint:

Phenol red is commonly added to mammalian cell culture media as a pH indicator: it turns yellow under acidic conditions (excess lactic acid/metabolites) and purple/pink under alkaline conditions (loss of $CO_2$).

Answer 1

The Correct Option is C