Animal, Plant & Bacterial Cells — GCSE Biology Revision
Revise Animal, Plant & Bacterial Cells for GCSE Biology. Step-by-step explanation, worked examples, common mistakes and exam-style practice aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP.
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Go to Specialised CellsWhat is Animal, Plant & Bacterial Cells?
Eukaryotic cells, like those in plants and animals, have a true nucleus and membrane-bound organelles. Prokaryotic cells, such as bacteria, are much simpler, lacking a nucleus and other membrane-bound structures. Plant cells are distinguished from animal cells by their cell wall, large permanent vacuole, and chloroplasts.
Board notes: A fundamental topic covered by all major boards (AQA, Edexcel, OCR) at both Foundation and Higher tiers.
Step-by-step explanationWorked example
A scientist identifies a single-celled organism. It has a cell wall but no nucleus. This organism is a prokaryote, specifically a bacterium. The presence of a cell wall is not exclusive to plants, as bacteria also have one, but the absence of a nucleus is the defining characteristic of a prokaryote.
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Common mistakes
- 1Assuming all bacteria are harmful. Many bacteria are harmless or even beneficial, playing vital roles in digestion and ecosystems.
- 2Confusing bacterial DNA with a nucleus. Bacteria have a single loop of chromosomal DNA and may have small rings of DNA called plasmids, but this genetic material is not enclosed within a nucleus.
- 3Forgetting that both plant and animal cells are eukaryotic. The key distinction is between eukaryotes (plants, animals, fungi, protists) and prokaryotes (bacteria).
Animal, Plant & Bacterial Cells exam questions
Exam-style questions for Animal, Plant & Bacterial Cells with mark-scheme style solutions and timing practice. Aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP specifications.
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Step-by-step method
Step-by-step explanation
4 steps · Worked method for Animal, Plant & Bacterial Cells
Core concept
Eukaryotic cells, like those in plants and animals, have a true nucleus and membrane-bound organelles. Prokaryotic cells, such as bacteria, are much simpler, lacking a nucleus and other membrane-bound…
Frequently asked questions
What are the main differences between plant and animal cells?
Plant cells have a cell wall, a large permanent vacuole, and chloroplasts, which are absent in animal cells. Animal cells have a more flexible cell membrane and are typically more irregular in shape.
Are bacteria plants or animals?
Bacteria are neither plants nor animals. They belong to a separate kingdom of life called prokaryotes, which are fundamentally different from the eukaryotic cells of plants and animals.