What is the endoplasmic reticulum similar to?
What is the endoplasmic reticulum similar to?
It works closely with the Golgi apparatus, ribososmes, mRNA, and tRNA. Structurally, the endoplasmic reticulum is a network of membranes found throughout the cell and connected to the nucleus. The membranes are slightly different from cell to cell and a cell’s function determines the size and structure of the ER.
What is an example of endoplasmic reticulum?
The endoplasmic reticulum is defined as a series of folded membranes in the cells which are associated with protein synthesis, storage and the movement of cellular materials. An example of the endoplasmic reticulum is the place that steroids are stored in the cells for later use.
What would a endoplasmic reticulum be in a city?
What company or place does the endoplasmic reticulum resemble in a Cell City? Road System b. The endoplasmic reticulum consists of a network of a tube-like passageway through which proteins from the ribosomes are able to be moved within a cell as the road system allows for movement throughout the city.
What is the endoplasmic reticulum like in a house?
The ER is like the hallways in a house. Hallways transport people from one room to another throughout a house. Vacuoles store food and water for cells.
What are the main function of 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.
What is the function of RER and SER?
Difference between Smooth and Rough Endoplasmic Reticulum
| Rough Endoplasmic Reticulum (RER) | Smooth Endoplasmic Reticulum (SER) |
|---|---|
| It participates in the synthesis of enzymes and proteins. | Synthesises glycogen, lipids and steroids. |
| It helps in the formation of lysosomes. | Gives rise to Spherosomes/ Oleosomes |
What is the structure of the 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.
Where is the rough ER located?
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 in the smooth ER?
Smooth endoplasmic reticulum (SER), meshwork of fine disklike tubular membrane vesicles, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that is involved in the synthesis and storage of lipids, including cholesterol and phospholipids, which are used in the production of new cellular …
What happens if there is no smooth ER?
The smooth ER has an important role in lipid and steroid synthesis, it is a storage for intracellular calcium as well. Without the RER the cell is not able to synthesis new plasma membrane proteins, lysosomal enzymes, proteines for the Golgi apparatus and proteins for extracellular secretion.
What would happen if the smooth ER stopped working?
The cell would no longer be able to produce ribosomes which are needed to make proteins. What would happen if the smooth ER in the cell were destroyed? The cell would no longer be able to produce proteins.
What is function of rough ER?
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 SER and RER?
The main difference lies between the SER and RER is the presence of ribosomes, as SER do not have ribosomes but RER have ribosomes. SER mainly produce and export lipids and protein and function for detoxification, while RER produces, secrete and export proteins and few hormones.
What happens in the RER?
One of the main functions of the rough endoplasmic reticulum is to produce and process specific proteins. These are the exported through the secretory pathway. After they are exported via membrane vesicles, they can be sent to the Golgi Apparatus to be further processed or to organelles.
Why does RER appear rough?
Rough Endoplasmic Reticulum (RER) They appear rough as there are large number of ribosome attached to the cytoplasmic side of their membranes. The ribosomes undergo the function of protein synthesis. Regions of cytoplasmic matrix containing RER take basic stain due to the RNA content of ribosomes.
Why is RER rough in nature?
Answer. RER or Rough Endoplasmic Reticulum is rough in nature due to the presence of ribosomes, which are attached to its surface. Endoplasmic reticulum can be of two forms- the rough endoplasmic reticulum( RER) and the smooth endoplasmic reticulum( SER).
What is a ribosome analogy?
2. Ribosome- The site where amino acids are hooked together to make proteins. Ribosome are like a factory, because ribosomes make proteins like factories make different products. Animal vs. Plant Cells.
What does a 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). Ribosomes are made in the nucleolus, a cluster of proteins and RNA found in the center of a cell’s nucleus.
What is the purpose of ribosomes?
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).
What are 70S and 80S ribosomes?
All prokaryotes have 70S (where S=Svedberg units) ribosomes while eukaryotes contain larger 80S ribosomes in their cytosol. The 70S ribosome is made up of a 50S and 30S subunits. Ribosomes play a key role in the catalysis of two important and crucial biological processes.
What are ribosomes Class 9?
A ribosome is a complex molecular machine found inside the living cells that produce proteins from amino acids during the process called protein synthesis or translation. Ribosomes are specialized cell organelles and found in both prokaryotic and eukaryotic cells.
What is the main function of ribosomes Class 9?
Ribosomes are minute particles consisting of RNA and associated proteins that function to synthesize proteins. Proteins are needed for many cellular functions such as repairing damage or directing chemical processes. Ribosomes can be found floating within the cytoplasm or attached to the endoplasmic reticulum.
What are lysosomes Class 9?
Class 9 Biology Fundamental Unit of Life. Lysosomes. Lysosomes. The sac-like structures in a cell surrounded by membrane are called lysosomes. They keep the cells clean by digesting and breaking the outside materials like bacteria, food entering the cell or worn-out cell organelles into small pieces.