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)
ABCD is a quadrilateral in which AD = BC and ∠ DAB = ∠ CBA (see Fig. 7.17). Prove that
(i) ∆ ABD ≅ ∆ BAC
(ii) BD = AC
(iii) ∠ ABD = ∠ BAC.

Read More: Fundamental Unit of Life: Cell
The different parts of a cell and their functions are as follows:
