Which cell organelle is associated with the glycosylation of proteins?

Differentiate between Rough Endoplasmic Reticulum $(RER)$ and Smooth Endoplasmic Reticulum $(SER)$.

Which organelle is in contact with both the plasma membrane and the nuclear envelope?

Which organelle of the cell is responsible for the synthesis of steroids?

$A$ cell organelle '$X$' is divided into two types on the basis of a cell organelle '$Y$',which helps in protein synthesis. Identify '$X$' and '$Y$' respectively.

Which of the following is responsible for the mechanical support, protein synthesis and enzyme transport?