Which of the following is not a membrane-bound organelle?
Ribosomes
Ribosomes are different from other organelles because they have no membrane around them that separates them from other organelles. Non membranous organelles of a cell include cytoskeleton, microvilli, centrioles, cillia, flagella, ribosomes while membranous organelles include mitochondria, nucleus, endoplasmic reticulum, golgi apparatus, lysosomes, peroxisomes, vesicles.