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Across 1. Small openings on the underside of a leaf through which oxygen and carbon dioxide can move. 7. A chemical that produces color. 8. HָO 10. The process by which plants and some other organisms capture the energy in sunlight and use it to make food. 11. CָHָOָ + 6 Oָ -------- 6 COָ + 6 HָO + energy 13. The chromosomes become arranged on the metaphase plate and are attached to the now fully formed spindle. 14. energy-rich organic compound made of the three elements carbon, hydrogen and oxygen. 17. Doubled rod of condensed chromatin: contains DNA that carries genetic information. 21. A tiny cell that is able to grow into a new organism. 24. COָ 26. The process by which cells break down simple food molecules to release the energy they contain. 27. The process by which a cell makes a copy of the DNA in its nucleus 28. An organism that makes its own food. 29. A cell structure that contains nucleic acids, the chemical instructions that direct all the cell's activities.

Down 2. Photosynthesis and Respiration 3. A close relationship between two organisms in which at least one of the organisms benefits. 4. 6 COָ + 6 HָO -light energy- CָH¹ָOָ + 6 Oָ 5. Provides energy for cells without using oxygen. 6. Chromosome sets assemble at opposite poles, a nuclear envelope reforms around each set, and cytokinesis (division of the cytoplasm) usually follows. 9. Oָ 12. Basic Unit of structure in all living things 14. Structure in the cells of plants that captures energy from sunlight and uses it to produce food. 15. An organism that cannot make its own food 16. The genetic material that carries information about an organism and is passed from parent to child. 18. A eukaryotic organism that cannot be classified as an animal, plant or fungus. 19. Type of cell division occurring in the reproduction of germ cells at the time of gamete formation. This process occurs both n plants and animals. 20. The stage of the cell cycle during which the cell's nucleus divides into two new nuclei and one copy of DNA is distributed into each daughter cell. 22. Chromosomes become visible, the nucleolus disappears, the mitotic spindle forms, and the nuclear envelope disappears. 23. Number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction. 25. Sister chromatids separate, and the now-daughter chromosomes move to opposite poles of the cell.