Which one of the following proteins would be least likely to pass through a Golgi apparatus?

a. Ribosomal proteins
b. Lysosomal enzymes
c. Cell surface proteins
d. Secreted proteins
e. ER proteins

(a) Ribosomal proteins

Explanation:

The proteins are modified by adding or removing sugars. Several proteins that passes through golgi apparatus includes lysosomal enzymes, cell surface protein, secreted proteins, and ER proteins.

The proteins pass through the endomembrane system and are dispatched in transport vesicles from the trans face of the Golgi apparatus which travel via cytoplasm and fuses with the plasma membrane releasing the protein to the outside of the cell. When they pass through the Golgi, proteins are altered and sorted for transport inside the cell to their eventual destinations. Proteins like  lysosomal enzymes, cell surface protein, secreted proteins, and ER proteins move through Golgi apparatus.

Ribosomal proteins are least likey to pass through golgi apparatus and bind different amino acids together to form polypeptides, and export them to the cytoplasm.

Hence, the correct option is (a) Ribosomal proteins.