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Science at key stage 3    (Year 7)

Unit 7A: Cells
Section 6: a. What do cells do?

QCA

Objectives
Children should learn:
  • that there are different types of cell, adapted for different functions
  • to use secondary sources of information

Activities

Outcomes
Children:
  • Review with pupils pictures, models or CD-ROMs of some specialised cells, eg epithelial cell, root hair, pollen, neurone, sperm, egg, red blood cell. Provide information about the role of each type of cell and ask pupils to match these to each cell.
  • Show pupils how to use secondary sources to find out more about specialised cells in plants and animals, and how to present this information as a report on a cell type. Use this activity as an opportunity to emphasise that cells are dynamic systems rather than static structures.
  • explain that different types of cell can be found in plants and animals, and that these cells carry out specialised functions
  • identify specialised features in different types of cell, and relate these to the function of a cell
  • find and present relevant information on a particular cell type

Points to note
  • Consideration of different types of cell in plants and animals is used to reinforce work on parts of cells, and on similarities and differences between cells in plants and animals.
  • At this stage pupils do not need to know about the structure of viruses. However, some pupils will find from secondary sources that they are not cells.
  • Pupils will have opportunities to relate cell adaptations to life processes in unit 7B 'Reproduction' and unit 9C 'Plants and photosynthesis'.

Sections in this unit

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This unit is divided into sections. Each section contains a sequence of activities with related objectives and outcomes. You can view this unit by moving through the sections or print/download the whole unit.
1. What are living organisms made from?
2. a. How can using a microscope give us information about structure?
3. b. How can using a microscope give us information about structure?
4. What are cells like?
5. Checking progress
6. a. What do cells do?
7. b. What do cells do?
8. a. How are new cells made?
9. b. How are new cells made?
10. What causes pollen tubes to grow?
11. Reviewing work