What is size of a rough endoplasmic reticulum?

The membranes of the endoplasmic reticulum are 5 to 8 nm thick. The lumen of the RER is approximately 20 to 30 nm wide, whereas that of the SER is larger (30 to 60 nm).

1. Is rough ER smaller than smooth ER?
2. Is the endoplasmic reticulum small?
3. What is the shape of rough endoplasmic reticulum?
4. How big is rough endoplasmic reticulum different from smooth endoplasmic reticulum?
5. What does a ribosome do?
6. What size are ribosomes?
7. What size are mitochondria?
8. Is er bigger than mitochondria?
9. What does the ribosome look like?
10. Why are there ribosomes on the rough ER?
11. What is rough endoplasmic reticulum function?
12. What is the difference between RER and SER Class 9?
13. What is the difference between rough ER and smooth ER What is the ER doing that is different in each case?
14. What is smooth endoplasmic reticulum Class 9?

Is rough ER smaller than smooth ER?

SMOOTH ENDOPLASMIC RETICULUM

Smooth ER is more tubular than rough ER and forms an interconnecting network sub-compartment of ER. It is found fairly evenly distributed throughout the cytoplasm. It is not studded with ribosomes hence 'smooth' ER.

Is the endoplasmic reticulum small?

The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins. Sometimes, when those proteins are made improperly, the proteins stay within the endoplasmic reticulum. ... And that smooth endoplasmic reticulum produces other substances needed by the cell.

What is the shape of rough endoplasmic reticulum?

There are two basic types of ER. Both rough ER and smooth ER have the same types of membranes but they have different shapes. Rough ER looks like sheets or disks of bumpy membranes while smooth ER looks more like tubes. Rough ER is called rough because it has ribosomes attached to its surface.

How big is rough endoplasmic reticulum different from smooth endoplasmic reticulum?

Smooth ER is derived from rough endoplasmic reticulum by sacrificing the ribosomes, whereas Rough ER originates from the nuclear membrane. The main difference between the SER and RER is the presence of ribosomes, as SER does not consist of ribosomes but RER consists of ribosomes.

What does a ribosome do?

A ribosome is a cellular particle made of RNA and protein that serves as the site for protein synthesis in the cell. The ribosome reads the sequence of the messenger RNA (mRNA) and, using the genetic code, translates the sequence of RNA bases into a sequence of amino acids.

What size are ribosomes?

Ribosomes from various sources (prokaryotes, eukaryotic cytoplasm, mitochondria, chloroplasts, and kinetoplasts) vary in size from 20 to 30 nm in diameter, but all are composed of a large and a small subparticle or subunit and perform similar functions in protein synthesis.

What size are mitochondria?

Mitochondria are organelles typically ranging in size from 0.5 micrometer to 1 micrometer in length, found in the cytoplasm of eukaryotic cells. Mitochondria contain the inner and outer membranes, separated by a space.

Is er bigger than mitochondria?

In this cell type and growth conditions the reconstruction reveals that the mitochondria and lysosomes are more dominant in terms of volume than the ER.

What does the ribosome look like?

A ribosome itself looks like a little hamburger bun. It's made of two subunits: a big one (the top bun) and a small one (the bottom bun). ... Eukaryotic ribosomes are found floating freely in the cytoplasm or attached to the rough endoplasmic reticulum (RER or rough ER for short).

Why are there ribosomes on the rough ER?

Rough ER lies immediately adjacent to the cell nucleus, and its membrane is continuous with the outer membrane of the nuclear envelope. The ribosomes on rough ER specialize in the synthesis of proteins that possess a signal sequence that directs them specifically to the ER for processing.

What is rough endoplasmic reticulum function?

Narration. The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.

What is the difference between RER and SER Class 9?

The main difference between the rough endoplasmic reticulum and smooth endoplasmic reticulum is that RER consists of ribosomes that are responsible for its rough nature and synthesis of protein.

What is the difference between rough ER and smooth ER What is the ER doing that is different in each case?

Smooth endoplasmic reticulum (SER) is a type of endoplasmic reticulum consisting of tubular vesicles that lack ribosomes on the outer surface and is involved in the synthesis and storage of lipids. Rough ER has ribosomes on the outer surface. Smooth ER doesn' thave ribosomes on the outer surface.

What is smooth endoplasmic reticulum Class 9?

The smooth endoplasmic reticulum has a tubular form. It participates in the production of phospholipids, the chief lipids in cell membranes and are essential in the process of metabolism. Smooth ER transports the products of the rough ER to other cellular organelles, especially the Golgi apparatus.