cells

3. an enzyme which takes large molecules and breaks them up
8. pigment found in plants which gives the plant its green colour
10. the movement of molecules from an area of low concentration to an area of high concentration which requires energy
13. an enzyme that takes small molecules and joins them together
15. site of photosynthesis
16. the movement of materials from an area of high concentration to an area of low
17. a specific shaped part of an enzyme where the substrate fits

1. a cell that is limp and floppy
2. the copying of DNA before a cell divides
4. a form of passive transport where molecules move across the cell membrane through the membrane protiens
5. rigid layer of cells found only in plants
6. a part of a cell where proteins are modified and packaged
7. light stage in chloroplast
9. biological catalysts which speed up biochemical reactions in an organism
11. the changing in the shape of the active site of an enzyme, so the substrate can no longer fit-caused by high temperature and wrong pH
12. respiration in the presence of oxygen
14. deoxyribose nucleic acid
15. part of mitochondria where the electron transfer chain occurs