The correct answer is: Golgi bodies.
Golgi bodies are double membrane structures that are commonly oval or disc shaped. They are found in most eukaryotic cells and are involved in the processing, sorting, and packaging of proteins and lipids. Golgi bodies are also involved in the synthesis of lysosomes and secretory vesicles.
Ribosomes are small, round organelles that are found in the cytoplasm of all cells. They are responsible for the synthesis of proteins. Ribosomes are composed of two subunits, a large subunit and a small subunit. The large subunit contains the ribosomal RNA (rRNA), while the small subunit contains the transfer RNA (tRNA). The rRNA and tRNA are responsible for the translation of the genetic code into proteins.
Lysosomes are small, spherical organelles that are found in the cytoplasm of all cells. They contain hydrolytic enzymes that are capable of digesting proteins, carbohydrates, lipids, and nucleic acids. Lysosomes are involved in the process of autophagy, which is the breakdown of damaged or unwanted cells.
The nucleus is a large, oval organelle that is found in the center of most eukaryotic cells. It contains the cell’s DNA, which is organized into chromosomes. The nucleus is also responsible for the regulation of gene expression.
In conclusion, the correct answer to the question “They are double membrane structures that are commonly oval or disc shaped” is Golgi bodies.