Unit 3 Matter and Energy in Organisms

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Across
  1. 3. Chain A sequence showing how energy and matter move from one organism to another.
  2. 4. The organelle in plant cells where photosynthesis takes place.
  3. 5. An organism that breaks down dead or decaying matter, returning nutrients to the environment.
  4. 8. A substance that provides nourishment essential for growth and energy.
  5. 9. Reaction A process in which substances are rearranged to form new molecules.
  6. 11. The powerhouse of the cell, responsible for producing ATP through cellular respiration.
  7. 13. An organism that obtains energy by eating other organisms.
Down
  1. 1. A series of chemical reactions that transforms water and carbon dioxide into sugar and oxygen.
  2. 2. Respiration The process by which cells break down glucose to release energy stored in ATP.
  3. 4. A key element found in all organic molecules and essential for life.
  4. 6. A gas produced by plants during photosynthesis and used by organisms for respiration.
  5. 7. The energy-carrying molecule used by cells.
  6. 10. An organism, like a plant or algae, that makes its own food through photosynthesis.
  7. 12. The smallest unit of matter that retains the properties of an element.