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Ch. 6 AP Bio Lecture Date Notes Questions 9/29 Multicellular organisms, many cell types, specialized tasks Single cell, singular task done for survival Body is like ecosystem 80% cells are microbes that live in gut Signaling is essential for multicellular organisms Big Brain Theory ? Mutations made so many times that the cells could send signals in so many different ways White Blood Cells stick to walls of Arteries Tumble of surface while red blood cells move as fluids. White Blood Cells Like Velcro Signals change that, proteins that make them less sticky so that they can move to areas where there is damage or stickiness when not being used. Done so that signals are efficiently received. Microtubules contribute to the cytoskeleton
