Rough Endoplasmic Reticulum (RER) - synthesizes proteins constituting cell membrane.
Smooth Endoplasmic Reticulum (SER) - synthesizes lipids constituting cell membrane.
(i) The kind of person the doctor is (money, possessions)
(ii) The kind of person he wants to be (appearance, ambition)
Read More: Fundamental Unit of Life: Cell
The different parts of a cell and their functions are as follows: