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Across 2. All living organisms are ______________of cells.(fact1) 6. Red ______________cells are about 7 micrometers across.(Fact19) 8. Cells carry out all basic life ______________.(fact10) 11. Improved microscopes ______________ cell knowledge.(Fact24) 12. Cells were ______________ before microscopes.(Fact22) 15. One ______________is one millionth of a meter.(Fact18) 19. The nucleus stores ______________ information in plant and animal cells.(fact6) 21. Organisms may contain one cell or many ______________ of cells.(fact2) 23. Plant cells contain ______________ and cell walls(fact5) 25. Cells ______________ wastes.(fact13) 26. Cells are ______________ in growth.(fact14)

Down 1. Cell structure and ______________ are closely related.(fact15) 3. Most cells are visible only with a ______________. (Fact 3) 4. Cells obtain ______________ and food.(fact12) 5. Cells ______________ the parts of an organism.(fact9) 7. Cells function similarly in all______________ organisms.(fact4) 9. Cell ______________ and function are closely related.(fact15) 10. Cells cannot usually be ______________ unaided.(Fact21) 13. The structure of living things is determined by cell ______________.(fact11) 14. Cells are the ______________ units of structure in living things.(fact7) 16. Cells are ______________ in micrometers.(Fact17) 17. Cells function ______________ in all organisms.(Fact16) 18. Skin contains over 100,000 cells per ______________ centimeter.(Fact20) 20. Microscopes enabled cell ______________.(Fact23) 22. Robert ______________observed cells.(Fact25) 24. ______________are the basic units of function in living things.(fact8)