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Across 7. release of energy in a cell 11. product of anaerobic respiration 12. each tissue and organ performing a specific function 13. with oxygen 14. only certain sized molecules could go through 15. structure that performs specific function in cell 16. moving of water through a membrane 17. moving of substances through membrane without use of cellular energy 18. form of energy for the cell

Down 1. like tissues make up __ 2. green pigment in plants 3. "garbage" disposals of cells 4. "powerhouses" of cell 5. having no nucleus 6. parts are dependent upon one another so that if one part is missing, the entire cell does not work 7. must take in food 8. moving of substances from area of high concentration to area of lower concentration 9. part of plant cell not found on animal cells 10. place of photosynthesis