Photosynthesis and Respiration

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Across
  1. 3. (in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.
  2. 4. the sequence of reactions by which most living cells generate energy during the process of aerobic respiration
  3. 6. another term for ethanol.
  4. 9. a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
  5. 12. using electron acceptors other than molecular oxygen
  6. 15. s a series of complexes that transfer electrons from electron donors to electron acceptors
  7. 16. an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers (cristae).
  8. 17. the breakdown of glucose by enzymes, releasing energy and pyruvic acid.
  9. 18. a colorless syrupy organic acid formed in sour milk and produced in the muscle tissues during strenuous exercise.
  10. 20. each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.
Down
  1. 1. n photosynthesis that require light energy that is captured by light-absorbing pigments (such as chlorophyll)
  2. 2. the supportive tissue of an epithelial organ, tumor, gonad, etc., consisting of connective tissues and blood vessels.
  3. 5. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
  4. 7. a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.
  5. 8. is the set of chemical reactions that take place in chloroplasts during photosynthesis.
  6. 10. is the process of producing cellular energy involving oxygen.
  7. 11. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
  8. 13. s a molecule that carries energy within cells.
  9. 14. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
  10. 19. refers to a chemical substance consisting of two hydrogen atoms bound to the central oxygen atom via a covalent bond.