Table of Contents
Where is smooth endoplasmic reticulum located?
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.
What types of cells have smooth endoplasmic reticulum?
The smooth endoplasmic reticulum is present in almost all eukaryotic cells. However, some eukaryotic cells lack sER, such as ova, embryonic cells, and mature RBCs. Conversely, some specialized cells, are rich in sER.
Where is the smooth endoplasmic reticulum most plentiful?
liver
The smooth endoplasmic reticulum is especially abundant in mammalian liver and gonad cells.
Is smooth ER found in plants or animals?
There are two types of endoplasmic reticulum: rough endoplasmic reticulum (rough ER) and smooth endoplasmic reticulum (smooth ER). Both types are present in plant and animal cells. The two types of ER often appear as if separate, but they are sub-compartments of the same organelle.
Does the smooth endoplasmic reticulum have ribosomes?
Smooth endoplasmic reticulum, ( SER), has been found involved in steroid synthesis. SER does not have ribosomes on its surface, however, and thus does not participate in the making of proteins.
Which cell would you find the most smooth ER?
Liver cells have an impressive network of smooth endoplasmic reticulum. Similarly, cells of the ovaries and testes, which produce the lipid-containing hormones estrogen and testosterone, contain large amounts of smooth endoplasmic reticulum.
Where are ribosomes located inside the cell?
Ribosomes are found ‘free’ in the cell cytoplasm and also attached to rough endoplasmic reticulum. Ribosomes receive information from the cell nucleus and construction materials from the cytoplasm.
What’s inside the nucleolus?
The nucleolus is the site of transcription and processing of rRNA and of assembly of preribosomal subunits. Thus it consists of ribosomal DNA, RNA, and ribosomal proteins, including RNA polymerases, imported from the cytosol.