Summative Review Crossword - A

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