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Across
  1. 2. theory – States that all living things are made of cells.
  2. 4. proteins – Proteins that transport molecules across a cell membrane.
  3. 5. – Organelle in plant cells where photosynthesis occurs.
  4. 7. permeable – Allows only certain substances to pass through a membrane.
  5. 9. – Allows all substances to pass through freely.
  6. 10. – The control center of the cell, containing genetic material (DNA).
  7. 11. transport – Movement of substances using energy, against a concentration gradient.
  8. 13. – Produces energy for the cell through cellular respiration.
  9. 14. – Green pigment in plants that absorbs sunlight for photosynthesis.
  10. 15. – Gel-like substance that holds organelles and supports cell functions.
  11. 17. reticulum – Transports proteins and lipids within the cell.
  12. 19. apparatus – Modifies, sorts, and packages proteins for transport.
Down
  1. 1. – Does not allow substances to pass through.
  2. 3. – A specialized structure within a cell that performs a specific function.
  3. 5. wall – Rigid outer layer providing structure and support in plant cells.
  4. 6. – Movement of molecules from high to low concentration.
  5. 8. membrane – Controls what enters and exits the cell.
  6. 12. – Synthesizes proteins for the cell.
  7. 16. – Stores water, nutrients, and waste.
  8. 18. – Movement of water across a selectively permeable membrane.