biology

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Across
  1. 4. – Gel-like substance inside a cell.
  2. 7. – Protein that speeds up chemical reactions.
  3. 13. – Organelle containing digestive enzymes.
  4. 14. – Process by which a cell engulfs large particles or other cells.
  5. 16. – Organelle responsible for photosynthesis in plant cells.
  6. 18. Sensing – Communication between bacterial cells using chemical signals.
  7. 19. – Macromolecule made of amino acids.
  8. 20. Fixation – Process where nitrogen gas is converted into a usable form for plants.
  9. 21. – Organelle containing genetic material.
  10. 23. – Protein that helps fight infections.
  11. 26. – Protein in red blood cells that carries oxygen.
  12. 28. – Cell division resulting in two identical cells.
  13. 30. – Type of cell without a nucleus.
  14. 32. – Cell division that produces gametes.
  15. 35. – Process by which plants make their own food using sunlight.
  16. 37. – Theory explaining the origin of mitochondria and chloroplasts in eukaryotic cells.
  17. 39. – Circular DNA molecule found in bacteria.
  18. 42. – Organelle that modifies and packages proteins.
  19. 43. – Network of fungal hyphae in soil or organic material.
  20. 44. – Cell formed by the union of two gametes.
  21. 45. – Type of cell with a nucleus.
  22. 48. – Process where cells expel substances.
  23. 49. – Structural polysaccharide in fungi and arthropods.
  24. 50. – Group of genes regulated together in prokaryotes.
Down
  1. 1. – Group of individuals of the same species in an area.
  2. 2. – First step of cellular respiration, breaking down glucose for energy.
  3. 3. – Basic unit of life.
  4. 5. – Organelle where energy production occurs.
  5. 6. – Organism that consumes others for energy.
  6. 8. – Refers to enzymes whose activity is regulated by molecules binding at a site other than the active site.
  7. 9. – Organism that makes its own food.
  8. 10. – Community of living organisms and their environment.
  9. 11. – Programmed cell death.
  10. 12. – Change in DNA sequence.
  11. 15. – Maintenance of a stable internal environment.
  12. 17. – Organelle that synthesizes proteins.
  13. 22. – Process where cells engulf external substances.
  14. 24. – Organic molecule used for long-term energy storage.
  15. 25. – Molecule essential for life (e.g., carbohydrates, proteins).
  16. 27. – Non-coding regions of a gene that are removed during RNA splicing.
  17. 29. – Movement of water across a membrane.
  18. 31. – Molecule involved in protein synthesis.
  19. 33. – Molecule carrying genetic instructions.
  20. 34. – Protective cap at the ends of chromosomes.
  21. 36. – Study of changes in gene expression without altering DNA sequence.
  22. 38. – Pores in plant leaves for gas exchange.
  23. 40. – Movement of particles from high to low concentration.
  24. 41. – Pressure exerted by water inside a plant cell against the cell wall.
  25. 46. – Coding region of a gene that is expressed.
  26. 47. – Segment of DNA that codes for a trait.