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Which of the following are the metabolic products of glucose and glutamine?

  • A.CO2 and NH3
  • B.CO2 and lactate
  • C.Lactate and ammonium
  • D.Lactate only

Answer: C

Correct answer: Lactate and ammonium

The two main substrates give the two main waste products: glucose fermented to lactate, and glutamine deaminated to ammonium. Both are toxic as they accumulate - lactate through the acid it produces, ammonium directly - and controlling them is the central problem in high-density culture.

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