Chapter 8 Crossword Puzzle

4. Internal membrane system founded in eukaryotic cells
8. Network of protein filaments in a eukaryotic cell that gives the cell its shape and internal organization and is involved in movement
9. property of biological membranes that allows some substances to pass across it while others cannot
11. Specialized structure that performs important cellular functions within a eukaryotic cell
12. cell organelle that stores materials such as water, salts proteins, and carbohydrates
14. Basic unit of all forms of life
17. Fundamental concept of biology that all living things are composed of cells
20. cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use

1. cell organelle consisting of RNA and protein found throughout the cytoplasm in a cell
2. In cells, structure that contains the cell's genetic material in the form of DNA
3. Flexible double-layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings
5. Organism whose cells contain a nucleus
6. Unicellular organism that lacks a nucleus
7. Strong, supporting layer around the cell membrane in some cells
10. cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell
13. Thin, flexible barrier that surrounds all cells
15. Fluid portion of the cell outside the nucleus
16. Organelle found in cells of plants and some other organisms that capture the energy from sunlight
18. Relatively constant internal physical and chemical conditions that organisms maintain
19. organelle in cells that modifies, sorts, and packages proteins and other materials from the endoplasmic reticulum for storage in the cell or release outside the cell