Fact 1: Ribosomes are structures in the cytoplasm where proteins are made.

Fact 2: Rough endoplasmic reticulum has ribosomes attached d.

Given the two facts above, answer the question "Where are the structures where proteins are made located on?" with the following options: 
- epidermis and dermis
 - Something that makes plants green
 - The area was once underwater
 - Veins and arteries.
 - rough endoplasmic reticulum
 - sub-units of species
 - Earth orbiting the Sun
 - the body's largest organ


 

     rough endoplasmic reticulum    