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Cell Structure and Organisation

Comparing cells and the levels of organisation

  • 3 things to know
  • Component 1

Overview

Term tissue, term organ and squamous epithelium and state where it is found.

What you need to know

Answer each one before you reveal it.

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Key term

Name three structures found in a plant cell but not in an animal cell.

Key term

Name a structure found in an animal cell but not in the cell of a flowering plant, and one way the vacuoles differ.

Key term

Compare the ribosomes and the cell wall of a bacterium with those of a plant cell.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Name three structures found in a plant cell but not in an animal cell.

    Model answer

    A cellulose cell wall, chloroplasts and a large permanent vacuole.

  2. 2

    Name a structure found in an animal cell but not in the cell of a flowering plant, and one way the vacuoles differ.

    Model answer

    Centrioles; and animal cells have only small temporary vacuoles rather than one large permanent vacuole.

  3. 3

    Give three features shared by prokaryotic and eukaryotic cells.

    Model answer

    Both have a cell surface membrane, cytoplasm containing enzymes, and ribosomes for protein synthesis.

  4. 4

    Compare the ribosomes and the cell wall of a bacterium with those of a plant cell.

    Model answer

    A bacterium has 70S ribosomes and a wall of peptidoglycan, while a plant cell has 80S ribosomes in the cytoplasm and a wall of cellulose.

  5. 5

    Which features of cells does a virus lack?

    Model answer

    A virus has no membrane-bound cytoplasm, only a protein capsid around its nucleic acid, and it has no ribosomes and no metabolism of its own.

  6. 6

    How would you recognise a prokaryotic cell in an electron micrograph?

    Model answer

    There is no nuclear envelope enclosing the genetic material and no membrane-bound organelles, and the cell is very much smaller than a eukaryotic one.

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