Yeasts are microorganisms that are used in the brewing and baking industries - Edexcel - GCSE Biology - Question 2 - 2013 - Paper 1
Question 2
Yeasts are microorganisms that are used in the brewing and baking industries.
The diagram shows a yeast cell.
(a) (i) State two ways in which the structure of this ... show full transcript
Worked Solution & Example Answer:Yeasts are microorganisms that are used in the brewing and baking industries - Edexcel - GCSE Biology - Question 2 - 2013 - Paper 1
Step 1
State two ways in which the structure of this yeast cell differs from the structure of a bacterial cell.
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Answer
Yeast cells contain a nucleus, while bacterial cells do not have a true nucleus as they are prokaryotic.
Yeast cells have membrane-bound organelles, such as a vacuole, whereas bacterial cells do not possess membrane-bound organelles.
Step 2
Suggest why yeast cells cannot produce glucose.
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Answer
Yeast cells cannot produce glucose because they do not have chloroplasts to perform photosynthesis, which is necessary for converting light energy into glucose.
