Animal Cell Culture and Regulation
When dissolved oxygen is lower than the critical concentration, viable cell concentration declines because of

incomplete glutamine oxidation
both (a) and (b)
increase in specific lactate production from glucose
accumulation of ammonia

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Animal Cell Culture and Regulation
During the growth of animal cells in culture, it is noticed that the cells do not look very healthy. After an investigation, this is found that there is a lot of lactic acid in the culture fluid. What is probably wrong with this culture?

The cells do not have enough oxygen
Ethyl alcohol is being produced in excess
The cells have too much oxygen
Glycolysis is being inhibited

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