Table of Contents
What is all the living material between the nucleus and the cell membrane called?
The cytoplasm The part of the cell referred to as cytoplasm is slightly different in eukaryotes and prokaryotes. In eukaryotic cells, which have a nucleus, the cytoplasm is everything between the plasma membrane and the nuclear envelope.
What structure is responsible for moving materials from the nucleus to the cell membrane?
The Endoplasmic Reticulum
The Endoplasmic Reticulum or ER is an extensive system of internal membranes that move proteins and other substances through the cell. The part of the ER with attached ribosomes is called the rough ER.
Are ribosomes are made of folded membranes?
Ribonucleic acid;a nucleic acid, that usually has one, that carries codes for making proteins from the nucleus to the ribosomes. A series of folded membranes with ribosomes attached. After proteins are made on the ribosomes, the RER transports the proteins along its membranes and packages them in vesicles.
How are ribosomes transported out of the nucleus?
In the nucleolus, new ribosomal RNA combines with proteins to form the subunits of the ribosome. The newly made subunits are transported out through the nuclear pores to the cytoplasm, where they can do their job. Some cell types have more than one nucleolus inside the nucleus. For instance, some mouse cells have up to nucleoli.
How are ribosomes bound to the double membrane?
The double-membrane envelope is penetrated by nuclear pore complexes and is continuous with the endoplasmic reticulum. The ribosomes that are normally bound to the cytosolic surface of the ER membrane and outer nuclear membrane are (more…) Bidirectional traffic occurs continuously between the cytosoland the nucleus.
Where are ribosomes found in all multicellular organisms?
Because protein synthesis is an essential function of all cells, ribosomes are found in practically every cell type of multicellular organisms, as well as in prokaryotes such as bacteria. However, eukaryotic cells that specialize in producing proteins have particularly large numbers of ribosomes.
How is the endoplasmic reticulum related to the nucleus?
The endoplasmic reticulum processes most of the instructions from the nucleus. As such, the endoplasmic reticulum surrounds the nucleus and radiates outward. In cells that secrete many products for the rest of the body, the endoplasmic reticulum can account for more than 50% of the cell.