does eukarya have cellular membranes that enclose organelles?

Yes, eukarya, which includes organisms like animals, plants, fungi, and protists, have cellular membranes that enclose organelles. These organelles, such as the nucleus, mitochondria, and endoplasmic reticulum, are surrounded by lipid bilayers, allowing for compartmentalization of cellular functions. This structural complexity is a defining characteristic of eukaryotic cells, distinguishing them from prokaryotic cells, which lack membrane-bound organelles.