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Across 2. Chemical reactions that result in the breakdown of more complex organic molecules into simpler substances, they usually release energy. (2 Words) 4. The process of splitting a compound into fragments with the addition of water, e.g. starch into glucose. 7. An organic compound composed of adenosine (an adenine ring and a ribose sugar) and three phosphate groups. (2 Words) 9. Not requiring, or capable of occurring, in the absence of air or free oxygen, in respiration. 10. The ability to do work or produce change. 11. The process whereby energy stored in an complex organic molecules is used to make ATP. It occurs in living cells.

Down 1. A nucleotide composed of adenine, ribose and a phosphate group. (2 Words) 3. A molecule made up of adenine, ribose, and two phosphate units. (2 Words) 5. Chemical reactions in which simpler substances are combined to form more complex molecules, they usually require energy. (2 Words) 6. The sum total of all the chemical reactions in the body. 7. Requiring air or oxygen for life or survival, in respiration. 8. Unit of work and energy.