What is a digestive sac not related to other endomembrane structures?

A digestive sac not related to other endomembrane structures is called a lysosome. Lysosomes are small organelles found in the cytoplasm of animal cells. They are membrane-bound vesicles that contain hydrolytic enzymes capable of breaking down various biomolecules, including proteins, carbohydrates, lipids, and nucleic acids. Lysosomes function in intracellular digestion, waste disposal, and recycling of cellular components. They play a crucial role in maintaining cellular homeostasis and removing damaged or unnecessary cellular materials. Unlike other endomembrane structures involved in the synthesis, modification, and transport of molecules, lysosomes are specialized in intracellular digestion and recycling.