Across
- 5. one of the end products of glycolysis
- 6. a group of four closely associated chromatids of a homologous pair formed by a synapsis
- 7. branch of science associated with identification and classification of organisms
- 8. membrane-bound sac, larger than a vesicle
- 11. rule stating that atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons
- 13. molecule that forms the bilayer of the cell's membrane
- 14. organism that feed on primary producers
- 16. interaction between different species that benefits each other
- 18. the solute concentration of a solution compared to the cell
- 19. region within a chloroplast that surrounds the grana
Down
- 1. membrane surrounding the cytoplasm that consists of a phospholipid bilayer with embedded proteins
- 2. pairing of homologous chromosomes during meiosis I
- 3. diploid cell formed by the union of two gametes
- 4. type of ecological sucession in which plants and animals first colonize a barren, lifeless habitat
- 9. hormone released by the posterior pituitary that causes contraction of the uterus and letdown of milk
- 10. small, membrane-bound sac that stored substances within a cell
- 12. chromosome condition in which a diploid cell has one more chromosome than normal
- 13. photosynthetic unit where solar energy is absorbed and high-energy electrons are generated
- 15. reactant in on enzyme-controlled reaction
- 17. a representation to show the number of organisms at each level of the food chain