Across
- 6. long,hairlike extensions for a cell membrane that aid in movement
- 7. an organelle in plants that contains chlorophyll & other pigments; the organelle in which photosynthesis occurs
- 8. short,hairlike extensions for a cell membrane that aid in movement
- 9. the thick fluid inside a cell that contains organelles; all the material inside a cell except the nucleus
- 12. the movement of molecules across a cell membrane, requiring the use of cellular energy
- 13. a form of passive transportaion which molecules move from an area of higher concentration to an area of lower concentration
- 15. a membrane that only certain molecules can pass through
- 18. a unicellular organism that does not have a membrane around its genetic material & that lacks membrane-bound organelles
- 20. a non-membrane-bound organelle that directs the assembling of proteins
Down
- 1. an organelle consisting of membranes that enable substances to be transported throughout the cell
- 2. a rigid structure manufactured by cells of plants, fungi, algae,and most bacteria to surround the cell membrane
- 3. the diffusion of water through a selectively permeable membrane
- 4. an organelle that contains digestive enzymes for disposing of foreign particles and worn out cellular structures
- 5. the movement of substances across a cell membrane without the use of cellular energy
- 10. an organelle that collects chemicals from the cytoplasm,processes them, and secretes them
- 11. the organelle in eukaryotes that contains chromosomes; the control center of the cell
- 14. the thin covering that forms the outer boundary of a cell and that is composed of phospholipids & proteins
- 16. the organelles in which aerobic respiration occurs to release usable energy from food
- 17. a membrane sac that stores various substances, such as water, food, or waste within a cell
- 19. a unicellular or multicellular organism whose cell or cells have a nucleus & other membrane-bound organelles