Across
- 4. humans select the survival of organisms with desirable traits
- 11. how many divisions does meiosis have?
- 13. lipids store...
- 15. physical appearance of an individual for a trait
- 17. allows large, polar molecules to pass through the cell membrane
- 19. what does secondary succession have that primary succession does not?
- 20. the phase where chromosomes line up in the middle of the cell
- 21. lowest trophic level in a food pyramid
- 22. what holds together sister chromatids?
- 25. monomer for protein
- 26. type of cell with no nucleus
- 27. water molecules sticking to other molecules
- 29. place on enzyme where substrates fit
- 30. substances changed during a chemical reaction
Down
- 1. when a small bud forms and falls off an organism and becomes a new organism
- 2. what blood type can be given to any other blood type
- 3. organelle in an animal cell that stores water and nutrients
- 5. how many divisions does mitosis have?
- 6. external factors that cause mutations
- 7. relationship where both species benefit
- 8. are gametes haploid or diploid?
- 9. the diffusion of water from a high to low concentration
- 10. cellular respiration happens in the...
- 12. the DNA nucleotides sugar is...
- 14. monomer for lipids
- 16. change over time in a population of species
- 18. synthesize proteins
- 23. how many kingdoms are there in the modern classification system?
- 24. what is the first step in photosynthesis called?
- 28. all living things are made of...