Microorganisms can be used to produce foods such as mycoprotein and yogurt - Edexcel - GCSE Biology - Question 1 - 2017 - Paper 1
Question 1
Microorganisms can be used to produce foods such as mycoprotein and yogurt.
(i) Draw one line from each substance supplied to its correct use in the fermenter.
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Worked Solution & Example Answer:Microorganisms can be used to produce foods such as mycoprotein and yogurt - Edexcel - GCSE Biology - Question 1 - 2017 - Paper 1
Step 1
Substance supplied: air
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To supply oxygen.
Step 2
Substance supplied: glucose
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As an energy source.
Step 3
Precautions are taken to ensure that the fermenter is not contaminated with other microorganisms.
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Sterilization.
Step 4
Explain why the cooling system is needed.
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The cooling system maintains an optimal temperature for microbial activity, preventing overheating which could inhibit growth.
Step 5
What type of microorganism is Fusarium?
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B fungus.
Step 6
During the fermentation process the pH changes.
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The pH decreases due to the production of acids, resulting in a more acidic environment.
