For example, some cells, such as prokaryotes or red blood cells, do not have an ER of any kind. Cells that synthesize and release a lot of proteins would need a large amount of ER.
You might look at a cell from the pancreas or liver for good examples of cells with large ER structures. Rough and Smooth There are two basic types of ER. Both rough ER and smooth ER have the same types of membranes but they have different shapes. 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. When enough proteins have been synthesized, they collect and are pinched off in vesicles. 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. See how other students and parents are navigating high school, college, and the college admissions process. Ask questions; get answers. How to Get a Perfect , by a Perfect Scorer. Score on SAT Math. Score on SAT Reading.
Score on SAT Writing. What ACT target score should you be aiming for? How to Get a Perfect 4. How to Write an Amazing College Essay. A Comprehensive Guide. Choose Your Test. What Is the Endoplasmic Reticulum? What Does It Do? Endoplasmic Reticulum Definition The endoplasmic reticulum is defined as an organelle that is made up of a series of phospholipid membranes.
Khan Academy Khan Academy has tons of free resources on all sorts of topics including cell structure. The British Society for Cell Biology The British Society for Cell Biology is a British non-profit organization dedicated to advancing cell biology research, which includes sharing knowledge and information.
CrashCourse Who said studying has to be boring? Jan 7, Explanation: Endoplasmic reticulum is a system of intracellular membranes that produce and transport substances. Related questions What organelles in eukaryotic cells contain DNA? How do organelles benefit eukaryotic cells? Why is nucleus called the brain of the cell? How does the nucleus differ in prokaryotic cells and eukaryotic cells?
How was the nucleus was discovered? How are the nucleus and the nucleolus different?
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