Summative Review Crossword - A

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Across
  1. 2. The liquid starting material of photosynthesis
  2. 5. An organism’s physical appearance
  3. 8. Organ system responsible for providing the body with oxygen
  4. 9. Organelle that breaks down glucose in order to provide energy for the cell
  5. 12. Having two different alleles for a trait
  6. 14. Having two identical alleles for a trait
Down
  1. 1. Organ system that breaks down food into smaller molecules
  2. 3. Structure that forms the outside barrier of an animal cell (2 words)
  3. 4. Organelle that produces proteins in the cell
  4. 6. An allele whose trait always shows up in an organism
  5. 7. With the exception of eggs and sperm, humans have 46 of these structures in their cells (plural)
  6. 10. Organelle where photosynthesis occurs in the cell
  7. 11. Organelle that controls all the activities of the cell
  8. 13. The gas that is produced in photosynthesis