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Yeasts are microorganisms that are used in the brewing and baking industries - Edexcel - GCSE Biology - Question 2 - 2013 - Paper 1

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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

  1. Yeast cells contain a nucleus, while bacterial cells do not have a true nucleus as they are prokaryotic.

  2. 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.

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