BIO 111 Lecture Notes - Lecture 9: Pseudopodia, Organelle, Flagellum
Document Summary
Aerobic-needs presence of oxygen to make energy. The cytoskeleton is a network of fibers inside cells. Microtubules [mts] are thick filaments made of tubulin proteins. Grow and shrink as tubulin dimers are added or subtracted. 1. mts serve as highways for organelle and vesicle movement. Motor proteins use energy to walk along the tracks carrying cellular cargo. Getting vesicle from golgi to plasma membrane. The centrosome is a microtubule organizing center in animal cells. Contains two centrioles oriented at right angles to each other. 3. mts make up cilia and flagella projections. Specialized arrangement of mts that allows for movement of these cell surface. Flagella whip back and forth to propel cells forward. Cilia have alternating strokes that move fluid over tissue surface. Microfilaments (mfs) are thin filaments made of actin proteins. Gives the outer layer of cytoplasm a gel-like feel. Provide strength and stability to cell, and can also aid cellular adhesion.
