Across
- 2. The part of a cell containing genetic material
- 4. The smallest part of an element that can exist
- 8. Movement of water through a partially permeable membrane
- 11. The basic unit of all living organisms
- 12. A positively charged particle found in the nucleus
- 17. The jelly-like substance where chemical reactions happen in a cell
- 19. A biological catalyst that speeds up reactions
- 20. A negatively charged particle found in shells around the nucleus
- 21. A vertical column in the periodic table
- 22. A structure containing cell sap in plant cells
- 24. Atoms of the same element with different numbers of neutrons
- 26. A substance made of only one type of atom
- 27. An element that usually does not conduct electricity
- 28. The organelle where aerobic respiration happens
Down
- 1. An element that usually conducts electricity and is shiny
- 3. The organelle containing chlorophyll for photosynthesis
- 5. Used to magnify objects too small to see with the naked eye
- 6. The structure where proteins are made
- 7. An energy level containing electrons around the nucleus
- 9. Two or more substances together that are not chemically joined
- 10. A group of tissues working together
- 13. A group of similar cells working together
- 14. The centre of an atom containing protons and neutrons
- 15. Controls what enters and leaves a cell
- 16. A charged atom formed by gaining or losing electrons
- 17. A substance made from two or more elements chemically bonded
- 18. A horizontal row in the periodic table
- 23. Movement of particles from high concentration to low concentration
- 25. A particle in the nucleus with no charge