The cytoplasm may contain additional organelles and macromolecules such as lipid droplets, vacuoles, and lysosomes. These vacuoles include lysosomes filled with acid phosphatase. Small vacuoles of fat accumulate and become dispersed within cytoplasm. The vacuoles shrink and other cellular organelles proliferate. Food enveloped by the "Amoeba" is stored in digestive organelles called food vacuoles. The cytoplasm is granular with or without vacuoles. In plants, movement of the cytoplasm around vacuoles is known as cytoplasmic streaming. Simple compartments, called vesicles and vacuoles, can form by budding off other membranes. Soon afterwards, many small vacuoles or vesicles appear surrounding the membrane of the CV. The trophozoite has a single nucleus, prominent for nuclear endosome and many cytoplasmic vacuoles. It is due to the formation of large and/or numerous cytoplasmic vacuoles. Cardiac rhabdomyomas are hamartomas composed of altered cardiac myocytes that contain large vacuoles and glycogen. Succulent plants such as the cacti store water in the vacuoles of large parenchyma tissues. This appearance is due to a high concentration of vesicles and vacuoles. These bacteria are able to carry out DNRA using intracellular nitrate stored in vacuoles.