Do Eukaryotes Have Endoplasmic Reticulum? 13 Complete Facts

Organisms called eukaryotes have cells that have a nucleus and other membrane-bound organelles. Let us see if eukaryotes have endoplasmic reticulum or not.

Eukaryotes have endoplasmic reticulum in their cytoplasm. These are membrane bound channel like organelles extending from nuclear membrane to the plasma membrane dividing the cytoplasm of the cell into several compartments.

Endoplasmic reticulum represent 3 different types of structures namely cisternae, vesicles and tubules.

Let us discuss where endoplasmic reticulum is located in eukaryotes, why it is present in eukaryotes, if all eukaryotes have ER and many more questions in this article.

Where is endoplasmic reticulum located in eukaryotes?

Endoplasmic reticulum forms the skeletal framework of a cell and they provide mechanical strength to the cell. Let us see where ER is located in eukaryotes.

Endoplasmic reticulum is located within the cytoplasm of the eukaryotes. These endoplasmic reticulum are extended from nuclear membrane to the cell membrane inside the cytoplasm.

Why do eukaryotes have endoplasmic reticulum?

Eukaryotic cells are highly developed cells. They contain all essential organelles like endoplasmic reticulum, microtubules and nucleus. Let us see why eukaryotes have ER.

Eukaryotes need endoplasmic reticulum to carry out a variety of functions. Some of them are listed below:

  • Eukaryotes have endoplasmic reticulum because it is significant for the synthesis, folding, modification, and transportation of proteins.
  • It forms a series of flattened sacs within the cytoplasm of eukaryotic cells.
  • It keeps the metabolic byproduct in isolation and separate the organic reaction within the cell cytoplasm.
  • Through this, it controls the osmotic pressure in a eukaryotic cell.
  • Endoplasmic reticulum also give rise to membranes of Golgi bodies and microbodies.

Do all eukaryotic cells have endoplasmic reticulum?

Endoplasmic reticulum are often found in the cytoplasm of eukaryotes. Let us see whether all eukaryotic cells have endoplasmic reticulum.

All eukaryotic cells have endoplasmic reticulum in their cytoplasm with an exception of erythrocytes. The cytoplasm of erythrocytes does not contain ER. The absence of endoplasmic reticulum permits more erythrocytes to accumulate haemoglobin since its presence lowers the surface-to-volume ratio. gif maker
Endoplasmic Reticulum from Wikimedia

Which eukaryotes are without endoplasmic reticulum?

Eukaryotes are the most advanced organisms. Their cell contain all the membrane bound organelles. Let us see which eukaryotes does not have endoplasmic reticulum.

There are no eukaryotes present without an endoplasmic reticulum (ER). Because ER plays an important role in cell wall formation and it also establishes the plane of cell division by the provision and transport of materials to be incorporated in the cell plate.

Do protists have endoplasmic reticulum?

Protists are unicellular or multicellular, occasionally colonial eukaryotic creatures that typically include protozoans. Let us know whether protists have endoplasmic reticulum.

Protists have endoplasmic reticulum in their cytoplasm as they are eukaryotes. These ER are crucial for transport and folding.

Do fungi have endoplasmic reticulum?

A fungus is a type of eukaryotic organism, which includes the more well-known mushrooms and microbes like yeast and mould. Let us see if fungi contain ER.

Fungi have a branched network of endoplasmic reticulum as they are eukaryotes. These are floating organelles that float in the cytoplasm. Proteins from ribosomes in fungi are transported to golgi bodies by rough endoplasmic reticulum.

Do plant cells have endoplasmic reticulum?

Plant cells are eukaryotic cells with a genuine nucleus and particular organelles to carry out particular tasks. Let us know if plant cell have endoplasmic reticulum.

Plant cells have endoplasmic reticulum (ER) as they are eukaryotes. In plants, endoplasmic reticulum is the part of endomembrane system. This system works together to modify, package, and transport lipids and proteins.

The endomembrane system includes: the nuclear envelope, endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles and the plasma membrane.

Do animal cells have endoplasmic reticulum?

Animal cells are eukaryotic cells that feature membrane-bound organelles in addition to a nucleus.

Animal cells have endoplasmic reticulum because they are eukaryotes. The endoplasmic reticulum of animal cells are an outsized, visually continuous network of flattened cisternae and membrane tubules.

Do bacterial cells have endoplasmic reticulum?

Bacteria are small single-celled prokaryotic organisms. Let us see whether bacterial cells have endoplasmic reticulum or not.

Bacterial cells do not have endoplasmic reticulum because bacteria is a prokaryote and prokaryotes lacks true nucleus and other membrane-bound organelles like endoplasmic reticulum.

Do prokaryotes have endoplasmic reticulum?

Prokaryotes are single-celled organism that lacks a nucleus, and other membrane-bound organelles. Let us know whether prokaryotes have endoplasmic reticulum or not.

Prokaryotes does not have endoplasmic reticulum and any other membrane-bound organelles. As prokaryotes are the most primitive organisms, they do not have an inner membrane and most of the other developed organelles present in eukaryotes.

Do eukaryotes have smooth endoplasmic reticulum?

Eukaryotes are the organisms that contain true nucleus and other membrane-bound cell organelles. Let us know whether eukaryotes have smooth endoplasmic reticulum.

Eukaryotes have smooth endoplasmic reticulum. The production of steroid hormones, lipid (fat) synthesis, and metabolism are all heavily correlated with smooth endoplasmic reticulum. It also acts as a detoxifier.

Do eukaryotes have rough endoplasmic reticulum?

Eukaryotes have endoplasmic reticulum. It frequently takes the shape of the rough ER and smooth ER. Let us see if they have rough endoplasmic reticulum.

Eukaryotes have rough endoplasmic reticulum. It includes interconnected, flattened tubes with a membrane around them. The manufacture, folding, quality assurance, and shipment of some proteins happen in the rough ER, which is dotted with many membrane-bound ribosomes.


The endoplasmic reticulum (ER), a sizable, dynamic structure, is involved within the production of proteins, the storage of calcium, and therefore the metabolism of lipids in the cell. Different domains, including tubules, sheets, and therefore the nuclear envelope, perform many tasks carried out by the ER. These membranes finally unite with the nuclear membrane’s outer layer during a series of continuous folds. Every other sort of eukaryotic cell, excluding sperm and red blood cells, has an endoplasmic reticulum.

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