4.6-4.7 Terms

2. layer of cell wall that is added between the plasma membrane and the primary cell wall
5. receptor proteins in plasma membrane that interconnects the extracellular matrix and the cytoskeleton
8. motor protein that microfilaments interact with
9. made up of glycoproteins such as collagen, proteoglycans, and fibronectin; bind to receptor proteins
12. motor protein associated with cilia and flagella
13. thin layer between primary walls of adjacent cells
15. type of intercellular junction; channels that perforate plant cell walls
17. short appendages specialized for locomotion or moving fluid past the cell; occur in large numbers on cell surfaces; power stroke beating pattern
18. a structure present in the cytoplasm of animal cells that functions as a "microtubule-organizing center"; contains two centrioles
19. layer of cell wall than is relatively thin and flexible; closest to the outside of the cell

1. network of fibers extending throughout the cytoplasm; organizes the cell's structures and activities anchoring many organelles; supports the cell and maintains its shape
3. another word for microfilaments
4. long cellular appendages specialized for locomotion; limited to one or a few per cell; spiral beating pattern
6. larger than microfilaments but smaller than microtubules; function is to support cell shape and fix organelles in place
7. extracellular structure that distinguishes plant cells from animal cells
10. thin solid rods; structural role of beating tension, resisting pulling forces within cell; acting alone or with myosin to cause cell contraction
11. functions: shape and support the cell, guide movement of organelles, separate chromosomes during cell division
14. a structure in the centrosome of an animal cell composed of a cylinder of microtubule triplets arranged in a "9 + 0" pattern
16. microtubule-based organelles; anchors the cilium or flagellum