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Across 2. The liquid part of the cell where life processes take place. 4. We know horses and donkeys are not the same ______, because their offspring, mules, are sterile. 6. Linnaeus used this language for his naming system, because it was not a spoken language and would not pick up words. 8. They produce proteins in the cell. 9. When DNA makes an exact copy of itself. 13. This is what Linnaeus called his naming system. 16. Any compound that contains carbon is referred to as this. 18. It is the movement of molecules from an area of higher concentration to an area of lower concentration. 20. Found in both plant and animal cells, it allows most small molecules to move into and out of the cell. 21. Bacteria do not have nuclei and thus would fall into this domain. 25. It is caused by a mutation in the cell's DNA which causes the cell cycle to be disrupted. 26. He challenged the idea of spontaneous generation by setting up a controlled experiment using freshly slaughtered beef. 27. Learning to walk would be an example of this. 28. One of the "mystery structures" of the cell, they don't seem to do anything until the cell begins to divide. 32. During this phase of the cell cycle, the cell grows, copies its DNA and finishes growing the rest of the organelles. 34. The idea that living things changed over time to become more specialized. 35. For a long time, it was the "dumping ground" for any eukaryotic organism that was hard to classify. 36. He was the first person to use the term "species". 38. It acts as the control center of the cell.

Down 1. A change in the DNA of a cell which cannot be predicted or controlled, 3. For thousands of years, people believed in this idea which said life could spring from non-living things. 5. There are only about 100 or so of these naturally occurring in nature, but they combine to form an endless variety of matter. 7. This process does not produce a lot of energy, but it is useful for making bread, cheese, alcoholic beverages, and ketchup. 10. Fur, fat, and feathers allow warm-blooded organisms to maintain this. 11. They are identical to the parent cell except they are smaller and have only about half of the organelles. 12. It is the science of classification or naming. 14. They are the power generators of the cell. 15. The DNA molecule is often referred to as this. 17. This invention allowed the development of the cell theory. 19. It holds chromatids together. 22. Because plant cell walls are relatively inflexible, they must build this instead of pinching in their cell membrane. 23. It is inorganic, but we can't live without it. 24. This is achieved when more cells are produced than die off. 29. While you do not need a lot of these organic compounds, we do need some because they burn slowly to produce energy. 30. His famous experiment duplicated the conditions of early Earth and showed how life could have formed. 31. This scientific concept is used in grocery store to maintain the freshness of produce and in movie theaters to sell you the $3 Coke! 33. During this phase of mitosis, the chromatids separate and begin to move to opposite ends of the cell. 37. The code of life.