Question

RER is rough as it contains on its surface:
A. Ribosome
B. Lysosome
C. Mitochondria
D. Volutin granules

Answer 1

Hint: The endoplasmic reticulum is the eukaryotic cell's transportation system, as well as a host of other tasks such as protein folding. Rough endoplasmic reticulum and smooth endoplasmic reticulum are the two components that make up this sort of organelle.

Complete answer:
Rough endoplasmic reticulum (RER) is a collection of flattened sacs that form a continuous membrane organelle in the cytoplasm of eukaryotic cells and play a key function in protein production. The rough endoplasmic reticulum (RER) gets its name from the look of its outer surface, which is covered in protein-synthesizing ribosomes.
This separates it from the other primary form of endoplasmic reticulum (ER), the smooth endoplasmic reticulum (SER), which lacks ribosomes and is involved in the production and storage of lipids, both superficially and functionally. RER can be found in animal and plant cells.
The nuclear envelope, which surrounds the cell nucleus, is continuous with the RER membrane. The RER is also close to the Golgi apparatus, which transports, alters, and bundles proteins in preparation for delivery to specific locations. Many proteins produced in the RER are packed and transferred to the Golgi apparatus in vesicles.
A lysosome is a digestive enzyme-containing membrane-bound cell organelle. Excess or worn-out cell components are broken down by them. They can be used to kill viruses and bacteria that have infiltrated the system. If a cell is injured beyond repair, lysosomes can assist it self-destruct through a process known as apoptosis, or programmed cell death.
Mitochondria are membrane-bound cell organelles that provide the majority of the chemical energy required by the cell's metabolic processes. Adenosine triphosphate is a tiny molecule that stores the chemical energy created by mitochondria (ATP).
Volutin granules are polymetaphosphate entities that are extremely refractive and intensely basophilic. When dyed with polychrome methylene blue or toluidine blue, they appear reddish.

So, option A is the correct answer.

Note: Ribosomes are macromolecular machinery that perform biological protein synthesis and are found in all living cells. To build polypeptide chains, ribosomes bind amino acids together in the order indicated by the codons of messenger RNA molecules.