Proteins that are synthesized in ribosomal subunits undergo extensive post-translational modification and are packaged and directed to the appropriate destination. which structural component of a cell is involved in such modification?

Golgi apparatus is the organelle that is involved in the post-translational modification of the proteins and packaging of these proteins in vesicles for transportation to their appropriate destination.

Golgi apparatus is having two faces initial face is entry face(cis face) from where unprocessed protein from ER enters and trans face(maturing face) from where the matured processed proteins are released into the vesicles.

The modification that takes place in the Golgi apparatus by Golgi enzymes are glycosylation, sulfation, and phosphorylation. Then these proteins are extruded from trans face of Golgi apparatus in the form of vesicle which have information about its destination in the cell.

Therefore Golgi apparatus is the structural component of a cell involved in such modification.

it is either c or d and i know for sure it is not a or b

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.