BIOL 1081 Lecture Notes - Lecture 10: Ground Substance, Middle Lamella, Proteoglycan
Document Summary
Cytoskeleton, motility, & extracellular structures reading: sections 6. 6-6. 7 in textbook: compare and contrast the structure and functions of different fibers in the cytoskeleton. Formation of nuclear lamina: describe the role of microtubules and motor proteins in intracellular transport. Microtubules serve as tracks along which organelles equipped with motor proteins can move. Motor proteins that attach to receptors on vesicles can walk the vesicles along microtubules or, in some cases, along microfilaments. Microtubules guide vesicles from the er to the golgi apparatus and from the golgi to the plasma membrane: identify the different cytoskeletal elements involved in cell movement, and describe how they accomplish it. Motile cilia usually occur in large numbers on the cell surface. Flagella are usually limited to just one or a few per cell. Cilia work like oars, with alternating power and recovery strokes/ cilia have a back and forth motion.
