Biology Unit 2 Flashcards for Biology Unit 2 for the retake exam on the 14th May 13. 5.0 / 5 based on 1 rating ? BiologyGCSEAQA Created by: RebekahCreated on: 28-04-13 15:08 24610731895 Across 1. Gel-like substance where most of the chemical reactions happen. It contains enzymes that control these reactions (9) 5. A substance which increases the speed of a reaction, without being changed or used up in the reaction (8) 6. These are where proteins are made in the cell (9) 10. The spreading out of particles from an area of high concentration to an area of low concentration (9) Down 2. The process of releasing energy from glucose, which goes on in every cell (11) 3. These are where photosynthesis occirs, which makes food for the plant. They contain a green substance called chlorophyll (12) 4. Open and close pores (5, 5) 7. When a plant is short of water, the guard cells lose water, making the stomata close to stop too much water vapour escaping (7) 8. A group of different tissues that work together to perform a certain function (5) 9. A group of similar cells that work together to carry out a particular function (6)
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