Biology Cross word

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Across
  1. 6. a rigid layer of polysaccharides enclosing a plant membrane
  2. 9. the resting state in which some animals pass the winter
  3. 12. a substance used to kill microorganisms and cure infections
  4. 13. the study of heredity and variation in organisms
  5. 15. a threadlike strand of DNA that carries genes
Down
  1. 1. fine spores produced by flowers to fertilize other flowers
  2. 2. breaking down an organic substance, as sugar into alcohol
  3. 3. a substance that cannot be separated into simpler substances
  4. 4. a change from one state (solid or liquid or gas) to another without a change in chemical composition
  5. 5. the region of the body between the thorax and the pelvis
  6. 7. infectious agent that replicates itself within living hosts
  7. 8. the fatty network of connective tissue that fills the cavities of bones
  8. 10. a process in which one substance permeates another
  9. 11. a part of the cell responsible for growth and reproduction
  10. 14. a group of people living in a particular local area