Endomembrane system includes $\_\_\_\_$ .

Which one of the following is the site for active ribosomal RNA synthesis?

Non-membrane bound cell organelles found in both prokaryotic and eukaryotic cells are $\_\_\_\_$ .

Choose the correct statements regarding cell organelles and their inclusions.

A. The endomembrane system includes Golgi complex, endoplasmic reticulum and mitochondria.

B. Rough endoplasmic reticulum bears ribosomes on its surface.

C. Both mitochondria and plastids have circular DNA.

D. A network of microtubules, microfilaments and intermediate filaments present in the cytoplasm is called cytoskeleton.

E. Mitochondrion is a single membrane-bound structure.

Choose the correct answer from the options given below :