Macromolecules (grade 8)

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Across
  1. 1. Tool for magnifying small objects.
  2. 3. Body's defense against infections.
  3. 4. Tiny infectious agent causing diseases.
  4. 6. Can contaminate lettuce and beaches.
  5. 8. Disease-causing microorganism like viruses or bacteria.
  6. 10. Bacterial infection causing food poisoning.
  7. 12. Microscopic single-celled organisms, some harmful.
Down
  1. 2. Common cold-causing virus.
  2. 5. Essential molecule for body structure/function.
  3. 7. Basic unit of living organisms.
  4. 9. Foreign substance or organism causing harm.
  5. 11. Structure with specific functions in organisms.