biology

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Across
  1. 5. controls what enters and leaves the cell
  2. 7. community of living things plus their non-living surroundings
  3. 8. has no nucleus
  4. 10. different forms of a gene
  5. 12. carries out photosynthesis in plant cells
  6. 15. organisms that are best adapted for their environment have the highest fitness and will therfore survive, reproduce, and pass on their good genes to their offspring
  7. 16. make up cell membranes and store extra energy
  8. 19. occurs in chloroplasts
  9. 20. diagrams that show evolutionary relationships between organisms
  10. 22. segment of dna that codes for a particular protein
  11. 23. has nucleus
  12. 24. all of the same species living in a particular area
Down
  1. 1. all of the living things (all species) living in a particular area
  2. 2. make protein
  3. 3. allele combination for a gene/trait
  4. 4. females choose males based on "sexy" or "showy" phenotypes or behaviors
  5. 6. energy sources like sugars and starches
  6. 9. acids carry genetic info
  7. 11. extra protection around plant and bacteria cells
  8. 13. contains dna in eukaryotes
  9. 14. break down glucose to release energy for the cell to use
  10. 17. building blocks of body or enzymes that speed up reactions in body
  11. 18. if two species share lots of physical similarities, they are probably related
  12. 21. occurs in mitochondria