CROSSWORD PUZZLE

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Across
  1. 1. A theory proposing that mitochondria and chloroplasts originated as free-living bacteria that were engulfed by ancestral eukaryotic cells.
  2. 6. The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll pigments.
  3. 8. A gas produced during the process of photosynthesis, essential for cellular respiration.
  4. 9. A vital molecule for life, composed of two hydrogen atoms and one oxygen atom.
  5. 10. A stack of thylakoids in the chloroplast, where the light-dependent reactions of photosynthesis take place.
Down
  1. 2. A membrane-bound compartment inside chloroplasts where the photosynthetic pigments are located.
  2. 3. A simple sugar that serves as an important energy source in living organisms.
  3. 4. Dioxide A gas used by plants during photosynthesis to produce glucose and oxygen.
  4. 5. A unit or quantum of electromagnetic radiation, often referring to a particle of light.
  5. 7. The fluid-filled space surrounding the thylakoids in a chloroplast, where the Calvin cycle of photosynthesis occurs