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Across 3. I am the site where cellular respiration occurs. I form ATP. Which part of the cell am I? 6. I am a membrane bound sac where undigested nutrients and chemicals are stored. Which cell part am I? 11. I Define the boundary of the cell. I regulate the traffic of chemicals between the cell and its surroundings. Which cell part am I? 13. I build lipid molecules. Which cell part am I? 14. I help maintain the chemical enviornment inside the organells that are different from the enviornemnt of the rest of the cell. Which cell part am I? 15. I am only Euraryotic. I am just unfolded DNA. Which cell part am I? 16. I make up organelles called ribosomes. Which cell part am I? 17. I have proteins inserted into or through me. Ribosomes dot the outside of me. Which cell part am I?

Down 1. I am the long, whip-like structure that enables the cell to move around. I am only found in animal cells. Which cell part am I? 2. I am only found in animal cells. When me and my friends move together we can propel a cell foward or draw materials past the cell. Which cell part am I? 4. I provide the tracks that other organels move along within the cell. I also allow the cell to move. I include microtubules and microfilaments. Which cell part am I? 5. I modify, store, and route proteins and other chemical products to their next destination. Which cell part am I? 7. I am only found in animal cells. I contain the digestive enzymes. Which cell part am I? 8. I am the photosynthetic organel found in plant cells. I hold light absorbing pigments. Which cell part am I? 9. I control the cell as well as holding its genetic materials. Which cell part am I? 10. I protect plant cells and help them maintain their shape. Which cell part am I? 12. I am called the protein assembly line. I am found either floating within the cell, attached to the outside of the nucleus, or attached to the rough ER. Which cell part am I?