Some of these proteins will have sugar groups added to them to form glycoproteins. Likewise, some of these new proteins will be transported out of the endoplasmic reticulum, while others will stay inside the endoplasmic reticulum to perform functions there.
That means that new ribosomes can detach and attach depending on the proteins the cell needs! That makes it look smooth—which is how it gets its name! How these lipids are used depends on the cell type.
Lipids can be used to create new cell membranes, create hormones, and store energy. The smooth endoplasmic reticulum also helps detoxify the cell by converting toxic organic chemicals into safer, water soluble products.
Fun fact: when there are lots of toxins present, the smooth endoplasmic reticulum can double its surface area to help clear them out. It will then return to normal size after the toxins have been removed. Liver cells have large amounts of smooth endoplasmic reticulum for this very purpose! The sarcoplasmic reticulum is found in muscle cells and is used to store calcium ions that muscles need to function.
When muscles experience sustained activity, the sarcoplasmic reticulum can release the stored calcium ions to help the muscles function. Khan Academy has tons of free resources on all sorts of topics including cell structure. Their video on the endoplasmic reticulum is really helpful , and they have articles about it on their website, too.
The British Society for Cell Biology is a British non-profit organization dedicated to advancing cell biology research, which includes sharing knowledge and information.
One of the ways they do this is through educational material, which they share on their website. Their softCell e-Learning porta l has tons of good information about all the organelles of a cell, including the endoplasmic reticulum.
Who said studying has to be boring? Need to brush up on more than just the endoplasmic reticulum before tackling the AP Biology exam? Grabbing a workbook or textbook might be your best bet. There are lots of students who find this test tricky! It breaks down all of the topics that might appear on the exam, so you can figure out exactly what you need to study.
It also includes some great study tips, too! And the best news? As a content writer for PrepScholar, Ashley is passionate about giving college-bound students the in-depth information they need to get into the school of their dreams. Our new student and parent forum, at ExpertHub.
Proteins are assembled at organelles called ribosomes. When proteins are destined to be part of the cell membrane or exported from the cell, the ribosomes assembling them attach to the endoplasmic reticulum, giving it a rough appearance. Smooth endoplasmic reticulum lacks ribosomes and helps synthesize and concentrate various substances needed by the cell. 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. Intramural Research. Extramural Research. Cancer Research Workforce. Partners in Cancer Research. What Are Cancer Research Studies. Research Studies. Get Involved. Cancer Biology Research. Cancer Genomics Research. Research on Causes of Cancer. Cancer Prevention Research. Cancer Treatment Research. Cancer Health Disparities.
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