Question

which of the following is not a membranous organelle? options: nucleus, ribosome, mitochondria, golgi apparatus, i dont know yet

Explanation:

Membranous organelles have membranes (e.g., nucleus has nuclear envelope, mitochondria has double membrane, Golgi has cisternae membranes). Ribosomes are non - membranous, made of RNA and protein, for protein synthesis.

Answer:

B. Ribosome