Biology
Microorganisms in Food Production
1,086 Questions
Microorganisms play a vital role in food production through processes like fermentation and bioprocessing. Questions on this topic cover the use of yeast, bacteria, and industrial microbiology. These concepts are important for science sections in various competitive exams.
Alcoholic fermentationDairy beverage productionIndustrial ethanol preparationCitric acid productionBiodigester temperature
Microorganisms in Food Production Questions
Which type of organism is commonly used as a feedstock for biofuel production?
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Bacteria
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Yeast
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Algae
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All of the above
D
Correct answer
Explanation
Bacteria, yeast, and algae are all microorganisms that can be engineered to produce biofuels. Bacteria and yeast are typically used for the production of ethanol, while algae are used for the production of biodiesel.
Which biofuel is produced from the fermentation of sugars?
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Ethanol
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Biodiesel
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Butanol
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All of the above
A
Correct answer
Explanation
Ethanol is a biofuel produced through the fermentation of sugars by microorganisms such as yeast or bacteria. It is the most common biofuel used in transportation.
Which biofuel is produced from the fermentation of lignocellulosic biomass?
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Ethanol
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Biodiesel
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Butanol
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Cellulosic ethanol
D
Correct answer
Explanation
Cellulosic ethanol is a biofuel produced from the fermentation of lignocellulosic biomass, which includes plant materials such as wood, straw, and agricultural residues. It is a promising alternative to conventional ethanol produced from corn or sugarcane.
What is the process by which yeast converts sugar into alcohol?
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Photosynthesis
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Cellular respiration
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Fermentation
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All of the above
C
Correct answer
Explanation
Fermentation is the process by which yeast converts sugar into alcohol.
What are the two main types of wine aging?
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Oxidative aging and reductive aging
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Primary aging and secondary aging
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Barrel aging and bottle aging
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Natural aging and artificial aging
A
Correct answer
Explanation
The two main types of wine aging are oxidative aging and reductive aging. Oxidative aging occurs when wine is exposed to oxygen. This type of aging can lead to the development of flavors such as nuts, dried fruit, and caramel. Reductive aging occurs when wine is not exposed to oxygen. This type of aging can lead to the development of flavors such as fresh fruit, citrus, and minerality.
Which of the following is a common type of fruit juice processing plant?
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Batch processing plant
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Continuous processing plant
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Hybrid processing plant
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All of the above
D
Correct answer
Explanation
Batch processing plant, continuous processing plant, and hybrid processing plant are all common types of fruit juice processing plants.
What is the main type of bacteria used in the production of blue cheese?
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Penicillium roqueforti
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Lactobacillus acidophilus
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Streptococcus thermophilus
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Bifidobacterium bifidum
A
Correct answer
Explanation
Blue cheese is produced using the mold Penicillium roqueforti, which gives it its characteristic blue veins and distinctive flavor.
What is the main type of bacteria used in the production of cheddar cheese?
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Lactobacillus lactis
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Streptococcus thermophilus
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Lactobacillus helveticus
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Penicillium roqueforti
A
Correct answer
Explanation
Lactobacillus lactis is the primary bacteria used in the production of cheddar cheese, contributing to its characteristic flavor and texture.
What is the purpose of fermentation in industrial biotechnology?
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To produce alcoholic beverages
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To produce antibiotics and other pharmaceuticals
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To produce biofuels and bio-based chemicals
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All of the above
D
Correct answer
Explanation
Fermentation is a key process in industrial biotechnology used to produce a wide range of products, including alcoholic beverages, antibiotics, pharmaceuticals, biofuels, and bio-based chemicals.
Which of the following is an example of a bioreactor used in industrial biotechnology?
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Stirred-tank bioreactor
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Airlift bioreactor
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Fluidized-bed bioreactor
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All of the above
D
Correct answer
Explanation
Stirred-tank bioreactors, airlift bioreactors, and fluidized-bed bioreactors are all examples of bioreactors used in industrial biotechnology.
What is the process of pickling called?
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Fermentation
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Dehydration
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Smoking
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Freezing
A
Correct answer
Explanation
Pickling involves a fermentation process where microorganisms convert the sugars in the vegetables into lactic acid, creating a tangy and acidic flavor.
What is the process of curing olives called?
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Fermentation
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Dehydration
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Smoking
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Freezing
Correct answer
Explanation
Olives undergo a curing process, which involves treating them with salt or brine to remove bitterness and enhance their flavor.
What is the process of making fermented pickles called?
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Lacto-fermentation
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Dehydration
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Smoking
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Freezing
A
Correct answer
Explanation
Fermented pickles undergo a process called lacto-fermentation, where lactic acid bacteria convert the sugars in the vegetables into lactic acid, resulting in a tangy and sour flavor.
What is the process of making quick pickles called?
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Fermentation
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Dehydration
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Smoking
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Refrigeration
D
Correct answer
Explanation
Quick pickles are made by submerging vegetables in a vinegar-based solution and refrigerating them, resulting in a faster pickling process.
What is the traditional method of making Champagne?
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Carbonation Injection
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Fermentation in Oak Barrels
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Secondary Fermentation in Bottles
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Distillation
C
Correct answer
Explanation
Champagne is made using the traditional method, also known as Méthode Champenoise, which involves a secondary fermentation in individual bottles, resulting in the formation of bubbles and the development of complex flavors.