8. Plant cells have a ____________________ ____________________ but animal cells do not. 9. The green pigment ____________________ enables a plant cell to make food by photosynthesis.
10. A plant cell has a large ____________________. 11. A sperm cell has a ____________________ for movement. 12. Muscle cells have a lot of ____________________ to give them energy. 13. In red blood cells the chemical ____________________ can bond with oxygen. 14. A group of similar cells working together is called a ____________________. 15. A group of tissues working together makes up an ____________________. 16. A group of organs working together makes a ____________________. 17. An example of an animal organ is the ____________________. 18. An example of a plant system is the ____________________. 19. Systems work together in an ____________________.
K U
Knowledge and Understanding 1. What is the term used for a living organism composed of only one cell? Give an example.
2. What is the term used for a living organism composed of many cells? Give an example.
3. A specimen is viewed with a microscope that has an eyepiece magnification of ×5 and an objective lens magnification of ×10. What is the total magnification?
4. Label the diagram of the light microscope in Fig 16. 5. Label the diagrams in Figs. 17 and 18 of a plant and an animal cell.
A B C Fig. 17 Fig. 18
6. Outline the functions of mitochondria, the nucleus and the cell membrane in cells. 7. Outline the functions of chloroplasts, the cell wall and large vacuoles in plant cells. 8. How are the structures of muscle cells, sperm cells and nerve cells suited to their function?
T I
Thinking and Investigating 1. Explain how the invention of the microscope has helped scientists understand the structure of cells.
