Year 10 - Science
Cells
Eukaryotic and prokaryotic cells
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit covers the structure and function of sub-cellular components in eukaryotic and prokaryotic cells and explores DNA as the genetic material of organisms. It explains genetic terms, protein synthesis, and how genetic variants influence phenotypes.
Lesson Summary
You will learn to identify that all cells have some structures in common and you can explain that all organisms are unicellular or multicellular.
Key Notes
- All organisms (including animals, plants, fungi and micro-organisms) are made up of one or more living cells.
- All cells have some structures in common (cell membrane and cytoplasm) and have a three-dimensional shape.
- Chemical reactions essential to life occur in cytoplasm; the cell membrane regulates the cell's internal environment.
- Many animals and plants are multicellular; they are made up of many cells organised to form tissues and organs.
- Micro-organisms such as bacteria are unicellular – they are made of just one cell.
Vocabulary To Learn
- organism: A living thing made of one or more cells.
- cell: The basic unit of all forms of life.
- multicellular: An organism made of many cells.
- micro-organism: An organism that can only be viewed through a microscope.
- unicellular: An organism that consists of a single cell.
Common Mistakes To Avoid
- Pupils may think that all animals and plant are multicellular and that all unicellular organisms are bacteria.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
All organisms (including animals, plants, fungi and micro-organisms) are made up of one or more living cells. All cells have some structures in common (cell membrane and cytoplasm) and have a three-dimensional shape.
2. Define this scientific word and use it in context. 'organism'
A living thing made of one or more cells. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Pupils may think that all animals and plant are multicellular and that all unicellular organisms are bacteria. Correction: Lesson explicitly addresses this misconception and the questions in Task A are designed to expose the misconception.
More Lessons In This Unit
- Animal cells: common structures and specialised cells Study Guide
- Common structures of prokaryotic cells Study Guide
- Eukaryotic and prokaryotic organisms Study Guide
- Light microscopy: observing and drawing cells Study Guide
- Plant cells: common structures and specialised cells Study Guide
- The size and scale of cells: including standard form Study Guide
- The size and scale of cells: the basics Study Guide
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