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Feb 2, 2023 · The endoplasmic reticulum (ER) is a network of membrane-bound organelle distributed throughout the cytoplasm of the eukaryotic cell. It is mainly concerned with membrane biogenesis, biosynthesis, processing, and transport of proteins and lipids.
- Endoplasmic Reticulum Definition
- Endoplasmic Reticulum Overview
- Endoplasmic Reticulum Function
- Structure of The Endoplasmic Reticulum
- Endoplasmic Reticulum Location
- Types of Endoplasmic Reticulum
The endoplasmic reticulum (ER) is a large organelle made of membranous sheets and tubules that begin near the nucleus and extend across the cell. The endoplasmic reticulum creates, packages, and secretes many of the products created by a cell. Ribosomes, which create proteins, line a portion of the endoplasmic reticulum.
The entire structure can account for a large proportion of the endomembrane system of the cell. For instance, in cells such as liver hepatocytes that are specialized for protein secretion and detoxification, the ER can account for more than 50% of the total lipid bilayer of the cell.Similarly, the ER membrane system is particularly prominent in pan...
The ER plays a number of roles within the cell, from protein synthesis and lipid metabolism to detoxification of the cell. Cisternae, each of the small folds of the endoplasmic reticulum, are commonly associated with lipid metabolism. This creates the plasma membrane of the cell, as well as additional endoplasmic reticulum and organelles. They also...
The endoplasmic reticulum membrane system can be morphologically divided into two structures–cisternae and sheets. Cisternae are tubular in structure and form a three-dimensional polygonal network.They are about 50 nm in diameter in mammals and 30 nm in diameter in yeast. ER sheets, on the other hand, are membrane-enclosed, two-dimensional flattene...
The endoplasmic reticulum processes most of the instructions from the nucleus. As such, the endoplasmic reticulum surrounds the nucleus and radiates outward. In cells that secrete many products for the rest of the body, the endoplasmic reticulum can account for more than 50% of the cell. In general, the nucleus expresses mRNA (messenger RNA), which...
There are two major types of ER within each cell – smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER). Each has distinct functions, and often, differing morphology. The SER is involved in lipid metabolism and acts as the calcium store for the cell. This is particularly important in muscle cells that need Ca2+ions for contracti...
- Purpose Statement. The purpose statement helps readers understand what you planned to accomplish with your project. Explain the basic reasoning behind the project, why you found the project compelling, and how you think the results of your experiment will be beneficial.
- Hypothesis. The hypothesis is your rough estimation of what you believe would happen in your experiment. The hypothesis must answer a specific question related to your project.
- Materials List. The materials list is relatively straightforward. You will simply need to make a list of everything you used to complete your experiment.
- Procedures. Writing a procedure is necessary so you can perform each section of your experiment consistently. Also, much like the materials list, the procedure section helps another person carry out your experiment if desired.
Mar 7, 2021 · In chemistry and physics, activation energy is the minimum amount of energy needed to start a chemical reaction. Reactants often get activation energy from heat, but sometimes energy comes from light or energy released by other chemical reactions.
Jul 1, 2024 · Erbium is a silvery-white metallic element belonging to the lanthanide series of the periodic table, with the atomic number 68. Known for its pink-colored ions, erbium finds extensive use in optical fiber amplifiers, lasers, and in the coloring of glasses and ceramics.
10 Awesome Chemistry Science Projects. Explore Our Science Videos. DIY Rainbow Candy. Fun Physics with Your Cell Phone. Uncover the inner workings of reactions, mixtures, and chemical phenomena through exciting experiments.
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Exhibition chemistry | Education in Chemistry. Spectacular science demonstrations to inspire your students. Dissolve coloured sweets to create a rainbow. 20 October 2024By Declan Fleming. Demonstrate diffusion, density and the particle model to your 14–16 learners in this easy experiment. Demonstrations with dry ice.
