Which type of Endoplasmic Reticulum is found in actively secreting cells?

How are microsomes obtained?

Which of the following cell organelles is involved in the synthesis of the cell organelle that contains hydrolytic enzymes?

The major role of Golgi bodies is:

Identify the components labelled as $A$,$B$,$C$,and $D$ in the diagram given below from the list $(i)$ to $(viii)$.
$(i)$ Cristae of mitochondria $(ii)$ Inner membrane of mitochondria $(iii)$ Cytoplasm $(iv)$ Smooth endoplasmic reticulum $(v)$ Rough endoplasmic reticulum $(vi)$ Mitochondrial matrix $(vii)$ Ribosome $(viii)$ Nucleus

In rapidly dividing cells,the endoplasmic reticulum is: