Industrial Biotechnology MCQ

Test your knowledge with important Industrial Biotechnology MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Industrial Biotechnology MCQs at Bissoy

• In a bioprocess, assume that only cell mass is formed. Due to a variation in process condition, if the microbial cell yield has halved, what would be the rate of substrate consumption to maintain the same rate of cell mass production?
  ক

  It would be doubled

  খ

  It would be halved

  গ

  It would be unchanged

  ঘ

  It would increase four folds
• Which organisms used for SCP may contain significant amounts of nitrogen in an unavailable form?
  ক

  Bacteria

  খ

  Algae

  গ

  Yeast

  ঘ

  Filamentous fungi
• Vinegar is prepared from alcohol with the help of
  ক

  Lactobacillus

  খ

  Acetobacter

  গ

  Azotobacter

  ঘ

  None of the above
• Which one of the following algae is a wonder crop with about 70% protein? even surprising famous soya bean in food value
  ক

  Chlorella

  খ

  Dunaliella

  গ

  Scendesmus

  ঘ

  Spirulina
• Rectified spirit produced in distilleries contains approximately
  ক

  70% ethanol

  খ

  80% ethanol

  গ

  95% ethanol

  ঘ

  98% ethanol
• Which enzyme is used particularly when wheat is added as an adjunct during beer production?
  ক

  Papain

  খ

  Neutral proteases

  গ

  Cellulases

  ঘ

  All the above
• The industrial production of vitamin B₁₂ employs
  ক

  Propionibacterium sp.

  খ

  Pseudomonas sp.

  গ

  Both A and B

  ঘ

  None of the above
• Which one of the following is a characteristic of continuous culture?
  ক

  Absence of death phase

  খ

  Presence of death phase

  গ

  Absence of exponential phase

  ঘ

  None of the above
• Sonti is
  ক

  Barley beer

  খ

  Ginger beer

  গ

  Wheat beer

  ঘ

  Rice beer
• Halocins isolated from halophilic can be exploited as
  ক

  Sunscreen agent

  খ

  Protein antibiotics

  গ

  Enzyme stabilizers

  ঘ

  Skin moisturisers
• Which of these is found in maximum amounts in "wort" used for beer production?
  ক

  Free amino acids

  খ

  Glucose

  গ

  Maltose

  ঘ

  Sucrose
• Which one of the following is most widely used for commercial production of citric acid?
  ক

  Aspergillus niger

  খ

  Penicillium citrinum

  গ

  Gibberella fujikuori

  ঘ

  None of the above
• Which was the first amino acid to be commercially produced by microbial fermentation?
  ক

  L-Iysine

  খ

  L-Ieucine

  গ

  L-serine

  ঘ

  L-glutamic acid
• Calyculins are natural products originally isolated from the marine
  ক

  Mollusc

  খ

  Sea-weeds

  গ

  Sponges

  ঘ

  Mangrove
• In a chemostat, which one of the following would increase the exit cell concentration
  ক

  Increase in inlet substrate concentration

  খ

  Increase in dilution rate

  গ

  Increase in inoculum size

  ঘ

  Increase in impeller size
• The toxicity of weak organic acids to microbial cells
  ক

  Enhances as the pH falls

  খ

  Decreases as the pH falls

  গ

  Is not affected by pH

  ঘ

  Is highest at pH 7.0
• In a batch reactor, which one of the following is true regarding specific growth rate?
  ক

  It remains constant with time

  খ

  It continuously increases with time

  গ

  It continuously decreases with time

  ঘ

  It reache s a maximum in the exponential phase
• The media for large scale industrial fermentation process usually
  ক

  Use highly purified carbon sources

  খ

  Consist of waste products from other processes, such as grain milling

  গ

  Do not require a nitrogen source because the atmosphere provides nitrogen

  ঘ

  All the above
• Production of citric acid is inhibited by
  ক

  Sodium azide

  খ

  Thioglycolate

  গ

  Sodium cyanide

  ঘ

  None of the above
• Beer is a product of
  ক

  Fermentation of barley grains by yeasts

  খ

  Fermentation of fruits

  গ

  Fermentation brought about by molds

  ঘ

  Fermentation of hops
• The application of the principles of process technology to biological systems is called
  ক

  Bioleaching

  খ

  Bioprocess technology

  গ

  Bioreactors or fermentors

  ঘ

  Food processing
• Bottom yeasts ferment the sugars at
  ক

  6° - 12°C

  খ

  12° - 15°C

  গ

  5° - 8°C

  ঘ

  4° - 9°C
• If the pulse input response curve for a CSTR shows a long tail, it means
  ক

  Strong internal circulation in the reactor

  খ

  Dead space in the reactor

  গ

  Short circulating in the reactor

  ঘ

  Parallel flow in the reactor
• Combination of high temperature during processing, low temperature during storage and increasing the acidity for prevention of food contamination is known as
  ক

  Stumbling technology

  খ

  Mixed preservation approach

  গ

  High pressure food preservation

  ঘ

  Hurdle technology
• Which one of the following materials is a bioplastic?
  ক

  Polypropylene

  খ

  Alginate

  গ

  Polyhydroxybutyrate

  ঘ

  Dextran
• Yeast is used for the preparation of
  ক

  Acetic acid

  খ

  Curd

  গ

  Ethyl alcohol

  ঘ

  Cheese
• Commercial production of rum is based on
  ক

  Molasses

  খ

  Corn steep liquor

  গ

  Wheat and barley grains

  ঘ

  Sulfite waste liquor
• Product of fermentation of glucose by yeast is
  ক

  (C₆H₁₀O₅)n

  খ

  C₂H₅OH

  গ

  C₆H₁₂O₆

  ঘ

  CH₃OH
• Fill in the blanks with appropriate option: vinegar is a liquid consisting of acetic acid produced by the fermentation of . . . . . . . . by . . . . . . . .
  ক

  Glucose, S. cerevisiae

  খ

  Ethanol, A. aceti

  গ

  Lactose, L. acidophilus

  ঘ

  Starch, B. amyloliquefaciens
• The malolactic fermentation is encouraged by species of
  ক

  Lactobacillus

  খ

  Pediococcus

  গ

  Saccharomyces

  ঘ

  Leuconostoc