What is a nonmembranous organelle?
What is surrounded by double layer of membrane with pores?
A nonmembranous organelle is a cell organelle that is not bound by a membrane. Ribosomes, Cytoskeletal Structures, Centrioles, and Basal Bodies are non membranous organelles.
A nonmembranous organelle refers to an organelle that lacks a surrounding membrane. These organelles are structures within the cell that carry out specific functions, but they are not enclosed by a membrane like other organelles such as mitochondria or the endoplasmic reticulum.
Examples of nonmembranous organelles include ribosomes, which are responsible for protein synthesis, and the cytoskeleton, which provides structural support for the cell.
On the other hand, an organelle surrounded by a double layer of membrane with pores is a characteristic of the nucleus. The nucleus is a membrane-bound organelle that contains the cell's genetic material, such as DNA. The double membrane of the nucleus, known as the nuclear envelope, separates the contents of the nucleus from the rest of the cell. This envelope contains tiny openings called nuclear pores, which allow for the exchange of molecules between the nucleus and the cytoplasm.