Across
- 3. A complex cell with a nucleus and organelles (like animal and plant cells).
- 4. A network of fibers that helps the cell keep its shape and move.
- 11. Break down harmful substances and fatty acids.
- 12. Thick tubes that give structure and help move organelles.
- 15. Stacks of thylakoids inside chloroplasts.
- 16. A rigid layer that supports and protects plant cells.
- 17. Packages, sorts, and ships proteins and other materials.
- 18. The thin outer layer that controls what enters and leaves the cell.
- 20. The fluid around the grana in a chloroplast where sugar is made.
- 22. The part of the nucleus that makes ribosomes.
- 25. The fluid inside mitochondria where reactions happen.
- 26. First to see living cells (like bacteria) under a microscope.
- 29. A simple cell without a nucleus (like bacteria).
- 31. Thin protein threads that help with movement and shape.
- 33. The jellylike material inside a cell that holds organelles.
- 35. Describes the cell membrane as flexible and made of moving parts (lipids and proteins).
- 37. Flat sacs inside chloroplasts where light reactions happen.
- 38. Said all cells come from existing cells.
- 40. Help organize cell division in animal cells.
- 41. The “powerhouse” of the cell; makes energy (ATP).
- 42. Said all animals are made of cells.
- 43. A large storage sac in plant cells that holds water and nutrients.
- 44. The fluid part of the cytoplasm.
- 45. The folds inside mitochondria that increase surface area for energy making.
Down
- 1. Medium-sized fibers that provide support and strength.
- 2. Ribosomes on the rough ER; make proteins for export or membranes.
- 5. A colorless plastid that stores starch, oils, or proteins.
- 6. Compares how much surface area a cell has to its volume; smaller cells exchange materials more easily.
- 7. Break down waste and old cell parts (“cleanup crew”).
- 8. The double membrane that surrounds the nucleus.
- 9. A plastid with colorful pigments (like red, orange, or yellow).
- 10. Structures in plant cells that make or store food (like chloroplasts).
- 13. The control center of the cell that holds DNA.
- 14. Covered with ribosomes; makes and moves proteins.
- 19. Long, whip-like tails that help cells move.
- 21. A small structure inside a cell that performs a specific job.
- 23. Said all plants are made of cells.
- 24. The green pigment in chloroplasts that captures sunlight.
- 27. The basic unit of life; all living things are made of cells.
- 28. Ribosomes floating in the cytoplasm; make proteins used inside the cell.
- 30. Makes lipids and helps detoxify the cell.
- 32. The organelle where photosynthesis happens in plant cells.
- 33. DNA and proteins inside the nucleus that carry genetic information.
- 34. First person to use the word “cell” after looking at cork under a microscope.
- 36. States that all living things are made of cells, cells are the basic unit of life, and all cells come from other cells.
- 39. Short, hairlike structures that help move the cell or move materials around it.