ricky's+cells

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-the nucleus: this is the largest organelle and is surrounded by the nuclear envelope. it contains the nucleoplasm, nucleoli and the chromatin (DNA). the nucleus controls the cell. -mitochondria: they are rod-like, double-membrane structures. the inner membrane is folded into projections called cristae. this is the site of ATP synthesis and is called the powerhouse of the cell -cell wall: cell walls are made of stronge materials that provide strength so cells can maintain their shape and live in harsh environments. -cytoplasm: the cytoplasm is a jelly like substance that helps maintain the cells shape and holds the organelles in place. -vacuoles: vacuoles are storage bubbles found in cells. the vacuoles are a lot larger in plant cells. Vacuoles might store food or any nutrients a cell might need to survive. -endoplasmic reticulum: the endoplasmic reticulum(ER) is a special membrane structure found only in complex cells. parts of the ER are studded with ribosomes. -ribosomes: ribosomes build proteins according to mRNA instructions. ribosomes read the mRNA code and enlist other molecules to build the called-for protein from a store of amino acids free floating outside the nucleus.