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SingaporeCombined ScienceQuick questions
Biology: Cells and Human Physiology
Quick questions on Cell structure and organisation explained: O-Level Combined Science
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are extra structures in plant cells?Show answer
Plant cells have three structures that animal cells lack:
What are comparing the two cell types?Show answer
An animal cell has a membrane, cytoplasm, nucleus and mitochondria but no cell wall, no chloroplasts and only small temporary vacuoles. A plant cell has all of those plus a cell wall, chloroplasts and a large permanent vacuole, and it tends to have a fixed, often rectangular, shape because of the wall.
What are specialised cells?Show answer
Cells are often specialised for their job: a red blood cell has no nucleus and is packed with haemoglobin to carry oxygen; a root hair cell has a long extension to absorb water. Structure is matched to function throughout biology.
What is q1?Show answer
Name the structure that controls what enters and leaves a cell, and the structure that contains the genetic material. [2 marks]
What is q2?Show answer
State the function of mitochondria and say whether they are found in animal cells, plant cells, or both. [2 marks]
What is q3?Show answer
Put these in order from smallest to largest: organ, cell, organism, tissue, organ system. [2 marks]
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