Ch. 4-4
Cell Diversity

40 trillion cells on the human body
200 different cell types
Cytology-study of cells
Cyclosis(cytoplasmic streaming)
	Slow movement of cytoplasm
Organelles
	"little organs"
	very specific structures found in cells
	perform specific process for cell
Cell specialization
	cell changes...to perform specific function
		shape
		size
		anatomy
Interdependence
	organism depends on specialized cells to perform life's activities
	more advanced organism-more interdependence
Size
	organism's size is determined by number of cells
		NOT SIZE OF CELLS!!!
	most cells are only visible with a microscope
	small because
		the nucleus cannot control huge cells
		size of the cell membrane
			ratio between surface area and volume
Shape
	determined by function







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