Question

Which of the following differentiates rough endoplasmic reticulum and smooth endoplasmic reticulum?

Answer 1

The cells have many different organelles. All of these organelles have many different functions that they all carry out. The endoplasmic reticulum are the organelles in the body that are responsible for producing proteins, lipids and steroids.

Complete answer:
The ER or endoplasmic reticulum is the largest organelle in the cell. This organelle is made up of many folds and contains two different parts, smooth ER and rough ER. The organelle is responsible for producing proteins, lipids and steroids.
The primary difference between smooth ER and rough ER are the ribosomes. The rough ER has millions of ribosomes that are present all over this organelle. The ribosome is a molecule that helps to produce proteins. They help the rough endoplasmic reticulum to produce proteins and to fold them. The smooth ER on the other hand does not contain this molecule. Therefore the smooth ER does not produce proteins. Insead this portion of the ER is responsible for producing lipids and steroids.
Therefore the answer to this question is B, ribosomes. Three of the other options on this list are organelles that are present in the cells, namely the mitochondria, lysosome and golgi apparatus.

Note:
The rough ER is covered in millions of ribosomes that is the reason it is known as the rough ER. The rough ER helps to produce and fold proteins in the organelle. The smooth ER does not contain these ribosomes.