8.1 How Organisms Obtain Energy

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Across
  1. 4. Almost all the energy in living organisms originates from the ______
  2. 5. Organism that makes its own food
  3. 8. The ability to do work
  4. 9. ATP is a nucleotide made of an adenine base, a ribose sugar, and three __________ groups
  5. 11. The catabolic pathway in which organic molecules are broken down to release energy for use by the cell is called Cellular _______________
  6. 13. ATP can be broken down into ______ and a free phosphate group
  7. 14. The first law of thermodynamics is the law of _______________ of energy, which states that energy can be converted, but not created nor destroyed
  8. 15. The study of the flow and transformation of energy
  9. 18. The anabolic pathway in which light energy from the Sun is converted to chemical energy for use by the cell
Down
  1. 1. Autotroph that converts energy from the Sun
  2. 2. The measure of disorder, or unusable energy, in a system
  3. 3. A series of chemical reactions in which the product of one reaction is the substrate for the next reaction is called a metabolic _____________
  4. 6. Organism that needs to ingest food to obtain energy
  5. 7. Autotroph that converts inorganic substances as a source of energy
  6. 10. The _________ pathway uses the energy released by catabolic pathways to build larger molecules from smaller molecules
  7. 12. The _________ pathway releases energy by breaking down larger molecules into smaller molecules
  8. 16. The most important biological molecule that provides chemical energy
  9. 17. All of the chemical reactions in a cell