Welcome to the Quiz!
This quiz contains 9 questions from a mix of 1 subtopics.
Which microorganism is commonly used in brewing?
yeasts
algae
bacteria
moulds
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What causes bread dough to rise during baking?
carbon dioxide produced by yeast during sugar fermentation
heat produced by yeast during sugar fermentation
oxygen used by yeast during sugar fermentation
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What do certain bacteria produce during milk fermentation to make yoghurt?
acetic acid
ethanol
lactic acid
citric acid
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What is the process of using microbes to speed up the degradation of pollutants called?
biotransformation
fermentation
bioaccumulation
bioremediation
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Which of the following is NOT a requirement for penicillin production using Penicillium chrysogenum?
a buffer to keep the pH stable at around 6.5
a nutrient-rich medium
small fermenters with constant stirring
anaerobic conditions
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What is one advantage of using microorganisms in biotechnology?
cost-effective cultivation and mass production
does not require sterile conditions, which reduces cost
no risk of contamination by other microorganisms
there are no social or ethical concerns with using microorganisms
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Which of the following is NOT an advantage of using microorganisms for food production?
independence from weather or breeding cycles
high protein and low fat content
ability to use waste materials as nutrients
improving flavour
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Which of the following is NOT a requirement for the cultivation of microorganisms in biotechnology?
nutrients
dependence on weather conditions
separation of microorganisms from the nutrient broth for food production
sterile conditions
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State 2 advantages and 2 disadvantages of using microorganisms in biotechnology.
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