The diagram shows a yeast cell - Edexcel - GCSE Biology - Question 1 - 2016 - Paper 1
Question 1
The diagram shows a yeast cell.
(a) Describe how the structure of a bacterial cell differs from this yeast cell.
Worked Solution & Example Answer:The diagram shows a yeast cell - Edexcel - GCSE Biology - Question 1 - 2016 - Paper 1
Step 1
Bacterial cells contain plasmid(s)
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Answer
Unlike yeast cells, bacterial cells often contain plasmids, which are small circular DNA molecules that can replicate independently of chromosomal DNA.
Step 2
Bacterial cells have a flagellum
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Answer
Bacterial cells may possess a flagellum, a tail-like structure that aids in movement, which is not present in yeast cells.
Step 3
Bacterial cells do not contain a nucleus
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Bacterial cells lack a nucleus; instead, their genetic material is located in the cytoplasm, whereas yeast cells have a defined nucleus.
Step 4
Bacterial cells do not have mitochondria
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Answer
Unlike yeast cells, which have mitochondria for energy production, bacterial cells typically do not have this organelle.
