Quiz tomorrow on the labelling the cell parts and explaining what each part does.           Cell Membrane - acts like a gatekeeper - controls movement of materials into\out of the cell. nucleus- control center (brain) - controls all the cell's activity chromosomes- contains the genes (genetic info) cytoplasm- fluid that fills the cell, nutrients absorbed, transported & processed here. ribosomes- are the protein builders or the protein synthesizers of the cell. endoplasmic reticulum- series of canals, carry material around the cell golgi apparatus- stores proteins until they are needed lysosomes- hold enzymes that were created by the cell, purpose of the lysosome is to digest things. centriole- small protein structure, critical in cell division mitochondrion- provide the cell with energy (powerhouse) vacuole- fluid filled space, water, sugar, minerals & proteins chloroplast- contains chlorophyll, used in photosynthesis cell wall- composed of cellulose, protects and supports cell