7th Grade Review

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Across
  1. 3. organelle that stores food, water, or waste
  2. 5. only in plant cells and it keeps the rigid structure of the cell
  3. 10. organelle that controls what goes in and out of the cell
  4. 12. what element makes up 78% of the air?
  5. 14. cell division that creates genetically identical cells
  6. 16. ____________ consumers eat producers
  7. 17. jelly-like substance that holds the organelles in place
Down
  1. 1. gas produced during photosynthesis
  2. 2. nonliving factors in an ecosystem
  3. 4. organelle where photosynthesis takes place
  4. 6. osmosis is the diffusion of ______________
  5. 7. unicellular organisms are made of _________ cell
  6. 8. food that plants make during photosynthesis
  7. 9. __________ consumers that eat primary consumers
  8. 11. organism that creates its own food
  9. 13. living and once living factors in an ecosystem
  10. 15. control center of the cell
  11. 18. what percent of energy goes from one level to the next