Why is the endoplasmic reticulum attached to the nucleus?

The endoplasmic reticulum (ER) is a large membrane-bound compartment spread throughout the cytoplasm of eukaryotic cells. It surrounds the nucleus as a double membrane bilayer and acts as a barrier to selectively control transport of molecules into and out of the nucleus (Fig. 1A,B).

Which endoplasmic reticulum is attached to the nucleus?

rough endoplasmic reticulum
The smooth endoplasmic reticulum like the rough endoplasmic reticulum is connected to the nuclear envelope. The smooth endoplasmic reticulum comprises tube-like structure located near the cell periphery. These tubules or tubes sometimes branch forming a network that is reticular in appearance.

How did the nucleus and endoplasmic reticulum work together?

The nucleus works hand in hand with the endoplasmic reticulum through the process of protein synthesis.

How does the ER and cell membrane work together?

Membranes and their constituent proteins are assembled in the ER. This organelle contains the enzymes involved in lipid synthesis, and as lipids are manufactured in the ER, they are inserted into the organelle’s own membranes. This happens in part because the lipids are too hydrophobic to dissolve into the cytoplasm.

Why are the nucleus and ER membranes connected?

The nucleus is surrounded by a system of two concentric membranes, called the inner and outer nuclear membranes. The outer nuclear membrane is continuous with the endoplasmic reticulum, so the space between the inner and outer nuclear membranes is directly connected with the lumen of the endoplasmic reticulum.

Is the endoplasmic reticulum part of the cell membrane?

Endoplasmic reticulum is a network of membranes inside a cell through which proteins and other molecules move. When proteins are destined to be part of the cell membrane or exported from the cell, the ribosomes assembling them attach to the endoplasmic reticulum, giving it a rough appearance.

Is nucleus prokaryotic or eukaryotic?

Prokaryotic Cells

	Prokaryotic Cells	Eukaryotic Cells
Nucleus	No	Yes
DNA	Single circular piece of DNA	Multiple chromosomes
Membrane-Bound Organelles	No	Yes
Examples	Bacteria	Plants, animals, fungi