What is the structure of a rough ER?

The rough endoplasmic reticulum is largely made of sheets – a two-dimensional array of flattened sacs that extend across the cytoplasm. In addition to ribosomes, these membranes contain an important protein complex called the translocon, which is necessary for protein translation within the rough ER.

1. What is the structure and function of the rough endoplasmic reticulum?
2. What is the structure of a ER?
3. How is the structure of rough ER different from smooth ER?
4. How does the structure of the smooth ER aid in the function?
5. What are the two main functions of the rough endoplasmic reticulum?
6. What is the color of the rough ER?
7. Why are there ribosomes on the rough ER?
8. Why is the rough ER important?
9. How is rough ER different from smooth ER What functions do they perform in a cell?
10. What structure makes new membranes for the cell?
11. How do ribosomes and rough ER work together?
12. What does the rough ER do in protein synthesis?
13. What is the role of rough ER in protein synthesis?
14. What does a rough ER look like?
15. What does the ribosome do?
16. What is the function of a ribosome?

What is the structure and function of the rough endoplasmic reticulum?

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 structure of a ER?

The ER consists of the nuclear envelope and the peripheral ER, which includes smooth tubules and rough sheets. While the ER is defined as an interconnected network with a continuous membrane, the different structures that make up the ER perform very diverse and specialized functions within the cell.

How is the structure of rough ER different from smooth ER?

The main difference between these two terminologies is that the Smooth Endoplasmic Reticulum is known for stocking the lipids and proteins. It is not bounded by ribosomes. Whereas, the Rough Endoplasmic Reticulum is bounded by the ribosomes and also stores proteins.

How does the structure of the smooth ER aid in the function?

The smooth endoplasmic reticulum (smooth ER) is a membranous organelle found in most eukaryotic cells. ... Its main functions are the synthesis of lipids, steroid hormones, the detoxification of harmful metabolic byproducts and the storage and metabolism of calcium ions within the cell.

What are the two main functions of the rough endoplasmic reticulum?

The rough ER, studded with millions of membrane bound ribosomes, is involved with the production, folding, quality control and despatch of some proteins. Smooth ER is largely associated with lipid (fat) manufacture and metabolism and steroid production hormone production. It also has a detoxification function.

What is the color of the rough ER?

Rough ER is covered with ribosomes that give it a rough appearance. Color and label the rough ER violet. Rough ER transports materials through the cell and produces proteins in sacks called cistern which are sent to the Golgi body, or inserted into the cell membrane.

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.

Why is the rough ER important?

The function of the rough ER is to provide a place so ribosomes can produce proteins, and proteins are one of the most important things in a cell. Rough ER is the organelle that reads the DNA instructions to make the proteins. Also, the rough ER is involved in the transportation of proteins to the Golgi apparatus.

How is rough ER different from smooth ER What functions do they perform in a cell?

Rough ER is different from smooth ER in having ribosomes (protein units ) on its surface. ... The Ribosomes present in RER are the structures responsible for making proteins which are further sent to the lumen . It is also responsible for making phospholipids which make up the membranes of cells. Hope that helps !

What structure makes new membranes for the cell?

How Are Cell Membranes Synthesized? 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.

How do ribosomes and rough ER work together?

Rough ER is a host for ribosomes that continually attach to and detach from the ER surface. Essentially, the endoplasmic reticulum and ribosomes work together in order to synthesize proteins and have them transported to their final destination.

What does the rough ER do in protein synthesis?

The rough ER is named so because it is dotted with tiny ribosomes, giving it a rough, or nubbed appearance under the microscope, kind of like a climbing wall. Together, they make proteins and ship them to all other parts of the cell in a process called protein synthesis.

What is the role of rough ER in protein synthesis?

Ribosomes and Rough Endoplasmic Reticulum (RER)

The endoplasmic reticulum presents a large surface area on which these ribosomes can be situated, therefore allowing protein synthesis to occur on a large scale. ... Rough ER is responsible for transporting the newly synthesized proteins to the Golgi apparatus.

What does a rough ER look like?

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. The double membranes of smooth and rough ER form sacs called cisternae. Protein molecules are synthesized and collected in the cisternal space/lumen.

What does the 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 is the function of a ribosome?

Ribosomes have two main functions — decoding the message and the formation of peptide bonds. These two activities reside in two large ribonucleoprotein particles (RNPs) of unequal size, the ribosomal subunits. Each subunit is made of one or more ribosomal RNAs (rRNAs) and many ribosomal proteins (r-proteins).