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Science Exercise 1

Key stage 3 Science Exercise

1. Living things are made of __________ .

2. Another word for a living thing is an ________ .

3. All organisms are made up of ________ known as cells.

4. Cells can be seen through a _________.

5. Animals and plants are made up of _________ .

6. The living things that are made up of only one cell, are called __________ .

7. A group of similar cells functioning together is called __________ .

8. A group of different tissues function together to form an _________ .

9. A group of organs work together to make an __________ .

10. A multicellular organism is usually consist of several __________ .

11. Particles move into and out of cells by __________ .

12. Cells need things like glucose and __________ to exist.

13. Respiration is a ___________ .

14. Respiration happens in ___________ of every living organism.

15. A process of Releasing energy from glucose is called ________ .

16. The energy released by respiration is used for ___________ that keeps you alive.

17. Aerobic respiration uses plenty of ___________ .

18. Anaerobic respiration does not use any ________ .

19. Anaerobic respiration is different in __________ .

20. In humans, anaerobic respiration creates a substance called ________ .

Answers: 1. Cells 2. Organism 3.tiny pieces 4. Microscope 5. lots of Cells 6. Unicellular 7. Tissue 8. Organ 9. Organ system 10. organ systems 11. Diffusion 12. Oxygen 13. Chemical reaction 14. Every cell 15. Respiration 16. All the other chemical reactions 17. Oxygen 18. Oxygen 19. Different organism 20. Lactic acid

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