Industrial Biotechnology MCQ Questions & Answers

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Combination of high temperature during processing, low temperature during storage and increasing the acidity for prevention of food contamination is known as

A) Stumbling technology B) Mixed preservation approach C) High pressure food preservation D) Hurdle technology

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Answer & Solution

Answer: Option D

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If the pulse input response curve for a CSTR shows a long tail, it means

A) Strong internal circulation in the reactor B) Dead space in the reactor C) Short circulating in the reactor D) Parallel flow in the reactor

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Answer & Solution

Answer: Option B

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Bottom yeasts ferment the sugars at

A) 6° - 12°C B) 12° - 15°C C) 5° - 8°C D) 4° - 9°C

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Answer & Solution

Answer: Option A

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The application of the principles of process technology to biological systems is called

A) Bioleaching B) Bioprocess technology C) Bioreactors or fermentors D) Food processing

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Answer & Solution

Answer: Option B

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Beer is a product of

A) Fermentation of barley grains by yeasts B) Fermentation of fruits C) Fermentation brought about by molds D) Fermentation of hops

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Answer & Solution

Answer: Option A

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Production of citric acid is inhibited by

A) Sodium azide B) Thioglycolate C) Sodium cyanide D) None of the above

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Answer & Solution

Answer: Option A

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The media for large scale industrial fermentation process usually

A) Use highly purified carbon sources B) Consist of waste products from other processes, such as grain milling C) Do not require a nitrogen source because the atmosphere provides nitrogen D) All the above

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Answer & Solution

Answer: Option B

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In a batch reactor, which one of the following is true regarding specific growth rate?

A) It remains constant with time B) It continuously increases with time C) It continuously decreases with time D) It reache s a maximum in the exponential phase

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Answer & Solution

Answer: Option D

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The toxicity of weak organic acids to microbial cells

A) Enhances as the pH falls B) Decreases as the pH falls C) Is not affected by pH D) Is highest at pH 7.0

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Answer & Solution

Answer: Option A

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

A) Increase in inlet substrate concentration B) Increase in dilution rate C) Increase in inoculum size D) Increase in impeller size

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Answer & Solution

Answer: Option A

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Industrial Biotechnology MCQ Questions & Answers | Biotechnology