Biology Crossword Review

12345678910111213141516171819202122232425262728293031323334
Across
  1. 2. Special type of cell division that reduces the number of chromosomes to half the original number.
  2. 9. Study of interactions among organisms and the environment.
  3. 10. Organelles that are the powerhouse of a cell.
  4. 11. A different form of a gene.
  5. 15. Organism that can produce its own food.
  6. 16. Term that describes trees that use cones to reproduce.
  7. 17. Basic unit of living things.
  8. 18. A specific type of characteristic.
  9. 21. The study of living things.
  10. 23. The attraction of molecules of the same substance.
  11. 24. Division of the nucleus of a cell.
  12. 30. Process by which autotrophs use sunlight, water and carbon dioxide to produce sugars and starches.
  13. 31. A factor that different forms in a population.
  14. 32. The attraction of molecules of different substances.
  15. 33. Organelle in plants filled with chlorophyll.
  16. 34. Group of organisms that can mate and produce fertile offspring.
Down
  1. 1. Process by which particles move from high concentration to low concentration.
  2. 3. Organic compound made of carbon and hydrogen in a particular ratio.
  3. 4. Group of ecosystems with similar climate and organisms.
  4. 5. Organic compound made of amino acids.
  5. 6. Organism that acquires food from other organisms.
  6. 7. A relationship where two species live closely together.
  7. 8. Term that describes trees that drop their leaves.
  8. 12. Organic compound made of glycerol and fatty acids.
  9. 13. Process of maintaining constant internal conditions.
  10. 14. The diffusion of water through a selectively permeable membrane.
  11. 19. Any necessity of life.
  12. 20. Mixture where components are evenly distributed.
  13. 22. The study of Heredity
  14. 25. Place where an organism lives.
  15. 26. Protein that helps speed up chemical reactions in the body.
  16. 27. Chemical substance needed to sustain life.
  17. 28. A sequence of DNA that codes for a protein and controls a trait.
  18. 29. Tiny structure inside a cell that has a unique function.