Question

Ribosomes, endoplasmic reticulum, and the Golgi apparatus functionally act in sequence to synthesize and modify proteins for secretory use (export) only, never for use by the cell. This statement is ________.

1) false; proteins thus manufactured are for use inside the cell only
2) false; integral cell membrane proteins are also synthesized this way
3) false; lipids, not proteins, are synthesized this way
4) true

Answer 1

Ribosomes, endoplasmic reticulum, and the Golgi apparatus functionally act in sequence to synthesize and modify proteins for both secretory use and use inside the cell.

Step-by-step explanation:

The statement is false. Ribosomes, endoplasmic reticulum, and the Golgi apparatus functionally act in sequence to synthesize and modify proteins, including integral cell membrane proteins, for secretory use (export) as well as for use inside the cell. The rough endoplasmic reticulum (RER) is responsible for the initial synthesis of proteins, including those intended for secretion or insertion into the plasma membrane. These proteins are then transported to the Golgi apparatus, where they undergo further modification and packaging before being sent to their final destination.