Biology

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Across
  1. 3. a plastid that contains chlorophyll
  2. 4. the material of which the chromosomes of organisms other than bacteria are composed
  3. 9. The energy obtained from the sun
  4. 10. the changing of the structure of a gene, resulting in a variant form
  5. 12. the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms
  6. 13. scientific study of life
  7. 14. study of heredity
  8. 15. basic building block of living things
Down
  1. 1. scientific study of plants
  2. 2. membrane-bound organelle that contains the cell's chromosomes.
  3. 3. a threadlike structure that carries all genetic information
  4. 5. production of energy in organisms
  5. 6. the source of energy for use and storage at the cellular level
  6. 7. all living things evolve from growth
  7. 8. the scientific study of animals
  8. 11. Living things maintain a relatively stable internal environment.
  9. 13. unicellular organisms that cause disease