Rer diagram

The Endoplasmic Reticulum ER is a complex system of tubes found solely in the cytoplasm of eukaryotic cells, rer diagram. We can learn about its structure with the help of a diagram of the endoplasmic reticulum easy way.

Before we get into rationalizing the answer, let us be oriented with what the diagram is labeled with:. AhdOmer June 2, , pm 1. The diagram shows a section of rough endoplasmic reticulum RER. Which answer correctly identifies the substances associated with structures 1 and 2? Albert June 19, , am 2. The answer to this question is choice B.

Rer diagram

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You now know that label 1 is a ribosome, rer diagram, which is the main cellular rer diagram involved in the process of translation or the production of proteins. Please Login to comment Before we get into rationalizing the answer, let us be oriented with what the diagram is labeled with: Label 1: The question tells you that this diagram is a rough endoplasmic reticulum.

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Federal government websites often end in. Before sharing sensitive information, make sure you're on a federal government site. The site is secure. NCBI Bookshelf. Terrence Sanvictores ; Donald D. Authors Terrence Sanvictores 1 ; Donald D. Davis 2. The endoplasmic reticulum ER is a structure found within the cytoplasm of eukaryotic cells.

Rer diagram

Among many cell organelles present in the cell, the endoplasmic reticulum ER is the largest membrane-bound organelle of the eukaryotes, but the prokaryotes lack these organelles. Although the endoplasmic reticulum is present in most eukaryotic cells, some cells like red blood cells and embryonic and egg cells lack it. ER, is an extensive network of membranes that encloses compartments called lumen throughout the cell. ER can be smooth or rough depending on the absence or presence of ribosomes. Smooth ER lacks ribosomes in its membrane, whereas rough ER has ribosomes. Emilio Veratti discovered the sarcoplasmic reticulum in muscle fibers that have similarities with the endoplasmic reticulum of other cells.

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The endoplasmic reticulum serves as a site for protein synthesis, lipid metabolism, and calcium storage within the cell. Diagram of Endoplasmic Reticulum with Labelling. Before we get into rationalizing the answer, let us be oriented with what the diagram is labeled with: Label 1: The question tells you that this diagram is a rough endoplasmic reticulum. Small sacs originating from the endoplasmic reticulum ER responsible for transporting chemicals, including proteins and lipids, to different parts of the cell. Thus, it is only right, that out of choices A to C, only choice B is correct with the association of the polypeptide with the RER lumen. The structure of ER includes a membrane of approximately 50 to 60 angstroms thick and has a fluid-mosaic structure similar to the plasma membrane. You will be notified via email once the article is available for improvement. This can be supported with the fact that it is different from FREE ribosomes, where the protein synthesized by free ribosomes can freely move around within the cell, whereas the polypeptides produced by ribosomes ATTACHED to the endoplasmic reticulum is NOT free to move around, and is subject to post-translational modification before it is sent out of the cell. Thus, it makes sense that the polypeptide chain that was just produced to go to the lumen for the RER to act on it. Suggest Changes. We can learn about its structure with the help of a diagram of the endoplasmic reticulum easy way.

The endoplasmic reticulum is the major site of synthesis in the cell.

After the mRNA sequence has been translated into a polypeptide chain , where does it go? AhdOmer June 2, , pm 1. We use cookies to ensure you have the best browsing experience on our website. Admission Experiences. The ER is composed of one completely continuous membrane bilayer and has a single continuous lumen. You will be notified via email once the article is available for improvement. It is an important element of the cell that performs a variety of functions. Last Updated : 15 Mar, The Endoplasmic Reticulum ER is a complex system of tubes found solely in the cytoplasm of eukaryotic cells. This leaves you with choices A, B, and C as your remaining considerations. Thus, it is only right, that out of choices A to C, only choice B is correct with the association of the polypeptide with the RER lumen. Open In App. Inside the endoplasmic reticulum, there is a region that serves as a conduit for secretions. With those 2 labels established, how do we begin answering this question? Thus, it makes sense that the polypeptide chain that was just produced to go to the lumen for the RER to act on it.