Science

2. an organism with multiple cells
5. rigid supporting layer in plants
8. produces proteins
10. converts energy in food to energy used by cell
14. makes food for cell using energy from sunlight
15. prevents harmful materials from entering the cell
16. the basic unit of structure and function in living things
18. a Dutch businessman who was the first person to observe living cells through a microscope
19. an organism with one cell
21. a scientist who noticed that plants are made of cells
23. English scientist who looked at the bark of cork oak trees

1. stores water,food,and waste products
3. break down food particles
4. packages and distributes materials
6. a possible answer to a scientific question
7. said animals are made up of animal cells
9. a tiny cell structure that carries out a specific function within the cell
11. directs cell’s activities
12. a widely accepted explanation of the relationship between cells and living things
13. gel-like fluid
14. a thin, flexible barrier that surrounds a cell and controls which substances pass into and out of a cell
17. maze like structure
20. an instrument that makes small objects look larger
22. a glass rectangle