biology

3. A pigment necessary for photosynthesis.
6. A thin covering of tissue.
9. Conversion of light energy from the sun into chemical energy.products of photosynthesis are glucose and oxygen
11. DNA coiled around and supported by proteins, found in the nucleus of the cell.
13. The region of a cell that contains the cell's main DNA. Centre of a cell.
16. A membrane-bounded "sac" within a cell.
18. shorter term for spermatozoon; male gamete
19. Powerhouse of the cell

1. The breakdown of absorbed substances.
2. Small part of all living things.
3. An organelle containing chlorophyll for photosynthesis.
4. A rigid structure on the outside of certain cells, usually plant and bacteria cells.
5. The breakdown of food molecules with a release of energy.
7. Sets of organs in our bodies that do the work to keep us healthy and alive.
8. Hairlike projections that extend from the plasma membrane and are used for locomotion.
10. A large vacuole that rests at the center of most plant cells and is filled with a solution that contains a high concentration of solutes.
12. The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration.
14. The removal of soluble waste materials.
15. main source of energy
17. Made of thousands of cells, connected by several body systems to do work to keep our bodies healthy & alive.