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Across 3. maintaining internal conditions regardless of surroundings 4. type of protein that binds to specific reactant molecules 6. bond between 2 atoms that share e- 8. Dark reaction produces sugars 10. max # org. an ecosystem can support 13. uncontrolled division of cells 15. how plants obtain energy 19. attraction of water to another substance 21. absorb green and blue, reflect red, orange and yellow 23. rely on other org. for food - are consumers 25. microorganism that performs anaerobic respiration 26. a density-dependent factor 28. only lets certain things in/out 31. solution with more particles outside the cell than inside 32. cancerous cells that spread 34. make own food from sunlight 36. Made up of genes which make up DNA 38. all conditions in which an org. lives and how it uses those conditions 40. smallest unit that can't be broken down by chemical means 44. the energy currency of the cell 45. substance in which the solute is dissolved 46. first 3 phases of the cell cycle are collectively called 48. long chains of polypeptides 50. when a substance is made of only one kind of atom 51. substance that is dissolved 53. "name tags" of the membrane 54. reaction – releases free energy 55. cells that have 2 of each type of chromosome are called 56. starch chains are broken down and stored as this 57. Transport - uses energy 58. extra chromosome in a 2n cell 59. same solute concentration inside and outside the cell

Down 1. transport proteins help molecules pass through the membrane 2. sequence of growth and division 5. simplest form of cell division is done by bacteria 7. composed of C, H, O in a 1:2:1 ratio 9. enzyme that makes ATP 11. bond forms between 2 atoms of opposite charge 12. when water clings to itself 14. the 22 pairs that are NOT sex chromosomes 16. pumps 2 K+ in and 3 Na+ out 17. transport that does not use energy 18. produced in glycolysis 20. more than one population in a defined area 22. movement of water across a selectively permeable membrane in response to a high solute concentration 24. replacement of one kind of community by another in a single place over a long period of time 27. repeating series of rxns that produces ATP, e- carriers, and CO2 29. changes in an organism’s genetic material 30. chromatids are joined in the center by this 33. 2C fragment is attached to a coenzyme 34. enzyme that changes shape due to a signal molecule 35. weak bond that links molecules 37. protien that helps cell sense its surroundings 39. proteins that move substances into or out of the cell that would not otherwise cross the membrane 41. solution with more particles inside the cell than outside 42. movement of particles form areas of high concentration to low concentration 43. this is what we can't break down in plants 47. contain chlorophyll 49. study of interactions among organisms and between them and their surroundings 52. cells that only have 1 of each type of chromosome are called