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SS1: BIOLOGY - 1ST TERM

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  1. Introduction to Biology | Week 1
    6 Topics
    |
    1 Quiz
  2. Recognizing Living Things | Week 2
    3 Topics
    |
    1 Quiz
  3. Organisation of Life | Week 3
    3 Topics
  4. Classification of Living Organisms | Week 4
    7 Topics
    |
    1 Quiz
  5. Kingdom Prokaryotae / Monera & Kingdom Protista | Week 5
    3 Topics
    |
    3 Quizzes
  6. Kingdom Fungi & Kingdom Plantae | Week 6
    9 Topics
    |
    2 Quizzes
  7. Kingdom Animalia I | Week 7
    6 Topics
    |
    1 Quiz
  8. Kingdom Animalia II | Week 8
    5 Topics
    |
    1 Quiz
  9. The Cell | Week 9
    3 Topics
    |
    1 Quiz
  10. The Cell Structure and Functions | Week 10
    4 Topics
    |
    1 Quiz
  11. The Cell and its Environment | Week 11
    4 Topics
    |
    1 Quiz
  12. Nutrition in Plants | Week 12
    4 Topics
    |
    1 Quiz



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Lesson 9, Topic 1
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Cell as the Basic Structural Unit of Living Organisms

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Cell

All living things are made up of cells. All cells are enclosed by a membrane that regulates the passage of materials between the surroundings and the cell.

The cell is the structural and functional unit of a living organism. It is also regarded as the basic unit of life.

There are two varieties of cells: Prokaryotes and Eukaryotes.

Prokaryotes have no nucleus or other internal membrane. All bacteria are prokaryotes.

Eukaryotes have a nucleus and nucleolus enclosed by a nuclear membrane and are more complex than prokaryotes. They make up every form of life, examples are human cells.

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