Biogenic element crossword puzzle

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Across
  1. 1. - Positively charged ion in biological systems
  2. 4. - Balance of charges in body fluids
  3. 7. - Role of zinc in immune system
  4. 8. - Process requiring calcium and phosphorus
  5. 10. - Maintenance of stable internal environment
  6. 12. - Maintenance of acid base equilibrium
  7. 14. - Passive transport using carrier proteins
  8. 16. - Structure controlling entry and exit of ions
  9. 17. - Element lacking metallic properties in biology
  10. 22. - Negatively charged ion in biological systems
  11. 23. - Substance that dissociates into ions in solution
  12. 27. - Transmission involving sodium and potassium
  13. 29. - Elements forming basic structure of living matter
  14. 30. - Regulation of fluid levels in body
  15. 32. - Movement of particles from high to low concentration
  16. 34. - Group including calcium and magnesium
  17. 35. - Fluid outside cells containing ions
  18. 37. - Internal fluid containing dissolved elements
  19. 38. - Electrical difference across cell membrane
  20. 39. - Function of elements in metabolism
  21. 41. - Formation of blood cells requiring iron
  22. 42. - Removal of excess elements from body
  23. 44. - Process requiring calcium ions
  24. 46. - Element necessary for normal function
  25. 47. - Process of forming ions from atoms
  26. 48. - Control of water and electrolyte balance
  27. 49. - Element required in very small quantities
  28. 50. - Combining capacity of an element
Down
  1. 2. - Harmful effect of excess elements
  2. 3. - Process supported by metal ions
  3. 5. - Availability of element for absorption
  4. 6. - Role of iodine in hormone production
  5. 7. - Fluid inside cells rich in potassium
  6. 9. - Maintenance of sodium and potassium levels
  7. 11. - Element required in large amounts in the body
  8. 13. - Group of elements like sodium and potassium
  9. 15. - Uptake of elements from digestive tract
  10. 18. - Charged metal atom involved in metabolism
  11. 19. - Lack of essential elements in body
  12. 20. - Inorganic substance required for body functions
  13. 21. - Function of iron in hemoglobin
  14. 24. - Membrane pump maintaining ion gradients
  15. 25. - Energy requiring movement across membranes
  16. 26. - Element essential for life processes
  17. 28. - Accumulation of elements in tissues
  18. 31. - Element present in minute quantities in organisms
  19. 33. - Control of element levels in body
  20. 36. - Function of selenium in protection
  21. 40. - Movement of elements in bloodstream
  22. 43. - Contraction involving calcium ions
  23. 45. - Metal ion required for enzyme activity