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