Across
- 4. organelle composed of numerous membranes that are used to convert solar energy into chemical energy; contains chlorophyll
- 6. condition or quality of allowing some, but not all, materials to cross a barrier or membrane
- 9. movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration
- 10. theory that states that all organisms are made of cells, all cells are produced by other living cells, and the cell is the most basic unit of life
- 11. molecule that forms a double-layered cell membrane; consists of glycerol, a phosphate group, and two fatty acids
- 13. solution that has a lower concentration of dissolved particles compared with another solution
- 15. double-layer of phospholipids that forms a boundary between a cell and the surrounding environment and controls the passage of materials into and out of a cell
- 19. energy-requiring movement of molecules across a membrane from a region of lower concentration to a region of higher concentration
- 21. cell that has a nucleus and other membrane-bound organelles
- 26. organelle that links amino acids together to form proteins
- 27. uptake of liquids or large molecules into a cell by inward folding of the cell membrane
- 28. jellylike substance inside cells that contains molecules and in some cells organelles
- 29. protein that detects a signal molecule and performs an action in response
- 31. organelle composed of a double membrane that acts as the storehouse for most of a cell's DNA
- 32. solution that has a higher concentration of dissolved particles compared with another solution
- 33. diffusion of molecules assisted by protein channels that pierce a cell membrane
- 34. difference in the concentration of a substance from one location to another
Down
- 1. release of substances out a cell by the fusion of a vesicle with the membrane
- 2. movement of molecules across the cell membrane without energy input from the cell
- 3. model that describes the arrangement and movement of the molecules that make up a cell membrane
- 5. bean-shaped organelle that supplies energy to the cell and has its own ribosomes and DNA
- 7. stack of flat, membrane-enclosed spaces containing enzymes that process, sort, and deliver proteins
- 8. organelle that contains enzymes
- 12. interconnected network of thin, folded membranes that produce, process, and distribute proteins
- 14. rigid structure that gives protection, support, and shape to cells in plants, algae, fungi, and bacteria
- 16. organelle that is used to store materials, such as water, food, or enzymes, that are needed by the cell
- 17. uptake of a solid particle into a cell by engulfing the particle
- 18. cell that does not have a nucleus or other membrane-bound organelles
- 20. network of proteins, such as microtubules and microfilaments, inside a eukaryotic cell that supports and shapes the cell
- 22. membrane-bound structure that is specialized to perform a distinct process within a cell
- 23. diffusion of water molecules across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration
- 24. small organelle that contains and transports materials within the cytoplasm
- 25. small cylinder-shaped organelle made of protein tubes arranged in a circle; aids mitosis
- 30. solution that has an equal concentration of dissolved particles compared with another solution