Reserve materials such as fats, glycogen and protein are stored as granules in the cytoplasm. As the cell ages, vacuoles appear which also contain reserves of metabolites and provide turgor to help keep the cell shape and are important in growth of the organism. | Reserve materials such as fats, glycogen and protein are stored as granules in the cytoplasm. As the cell ages, vacuoles appear which also contain reserves of metabolites and provide turgor to help keep the cell shape and are important in growth of the organism. |