The endoplasmic reticulum often bears

Which of the following is not a true cell organelle?

Which cell organelle is known as the Palade particle?

$A$ polysome is a chain of .......

What is the type of ribosome found in a eukaryotic cell?

Which cell organelle is described by the following statements?
$(A)$ Granular structure.
$(B)$ First observed under an electron microscope as dense particles by $George\, Palade$.
$(C)$ Composed of $RNA$ and proteins.
$(D)$ Not surrounded by any membrane.