Oxygen Uptake in Cell Cultures MCQ

Test your knowledge with important Oxygen Uptake in Cell Cultures MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Oxygen Uptake in Cell Cultures MCQs on Bissoy. Bissoy App

• Cell density is controlled by increasing or decreasing flow of culture medium in which state?
  ক

  Turbidostat

  খ

  Chemostat

  গ

  Continuous culture

  ঘ

  Synchronus culture
• The population of microbes is maintained in which phase for long time using continuous culture system?
  ক

  Lag

  খ

  Log

  গ

  Exponential

  ঘ

  Stationary
• The lowest yield of ATP is in ____________
  ক

  Aerobic respiration

  খ

  Aerobic fermentation

  গ

  Anaerobic respiration

  ঘ

  Fermentation
• In anaerobic condition sugar in dough is converted into?
  ক

  Alcohol

  খ

  Water

  গ

  Glucose

  ঘ

  Sucrose
• Beer may be produced by ________________
  ক

  Fermentation of rice

  খ

  Germination of rice

  গ

  Germination of barley

  ঘ

  Fermentation of grapes
• Which type of microbes grow well in the condition of enriched oxygen?
  ক

  Obligate anaerobes

  খ

  Obligate aerobes

  গ

  Facultative anaerobes

  ঘ

  Facultative aerobes
• Refer to Q8 and, calculate the bacteria suffer growth inhibition after copper sulphate is accidently added to the fermentation broth. This causes a reduction in oxygen uptake rate to 3 mmol g-1 h-1. What maximum cell concentration can now be supported by the fermenter?
  ক

  50 gl-1

  খ

  10 gl-1 [ 25 gl-1 d) 55 gl-1

  গ

  9. Refer to Q8 and, calculate the bacteria suffer growth inhibition after copper sulphate is accidently added to the fermentation broth. This causes a reduction in oxygen uptake rate to 3 mmol g-1 h-1. What maximum cell concentration can now be supported by the fermenter? a) 50 gl-1 b) 10 gl-1 b) 25 gl-1

  ঘ

  55 gl-1
• A strain of Azotobacter vinelandii is cultured in a 15 m3 stirred fermenter for alginate production. Under current operating conditions kLa is 0.17 s-1. Oxygen solubility in the broth is approximately 8 x 10-3 kg m-3. The specific rate of oxygen uptake is 12.5 mmol g-1 h-1. What is the maximum possible cell concentration?
  ক

  10 gl-1

  খ

  15 gl-1

  গ

  20 gl-1

  ঘ

  12 gl-1
• Maximum rate of oxygen transfer occurs when?
  ক

  CAL = 0

  খ

  CAL < 0

  গ

  CAL >= 1

  ঘ

  CAL > 1
• At steady state, there is accumulation of oxygen at any location in the fermenter?
  ক

  True

  খ

  False
• Single cells are smaller than gas bubbles?
  ক

  True

  খ

  False
• Which Substrate is consumed rapidly in fermentation process?
  ক

  Fructose

  খ

  Glucose

  গ

  Sucrose

  ঘ

  Lactose
• What is the unit of “Qo”, the oxygen uptake rate per volume of broth?
  ক

  gl s-1

  খ

  g-1l s

  গ

  g-1l-1 s

  ঘ

  g l-1s-1
• The solubility of oxygen in aqueous solutions is about?
  ক

  20 ppm

  খ

  15 ppm

  গ

  10 ppm

  ঘ

  5 ppm
• What do you mean by “NA” in mass transfer?
  ক

  Rate of oxygen transfer per unit volume of fluid

  খ

  Rate of oxygen transfer per unit volume of gas

  গ

  Avogadro number

  ঘ

  Rate of oxygen transfer per unit mass of solid