Across
- 7. The name of the acid in the stomach
- 10. The name given to a chemical which has a pH between 1 and 6.
- 12. A section for DNA that controls a characteristic.
- 13. - these substances have a pH of 7
- 14. The name of the Scientist that developed the theory of survival of the fittest
- 15. the part of the reproductive system where eggs are developed
- 17. The part of the cell that controls it.
- 18. Where the foetus develops
- 19. The name of the organs where sperm is made
- 20. The part of the cell where respiration takes place.
- 21. the short name for deoxyribonucleic acid.
- 22. The part of the cell where protein synthesis happens
Down
- 1. The process when a sperm meets an egg.
- 2. The variable that you measure
- 3. The part of the cell that contains cell sap
- 4. the force caused when two objects rub together
- 5. The gas produced when acids react with metal
- 6. The name given to a chemical which has a pH between 8 and 14
- 8. The variables you keep the same
- 9. - the name of the chemical reaction when acids and alkalis react.
- 11. The variable that you change
- 16. the force opposite to weight that stops us falling into the Earth.