What is a fun facts about endoplasmic reticulum?
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!
Why is the ER in a cell important?
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.
How many ER does a cell have?
There are two types of endoplasmic reticulum: rough endoplasmic reticulum (rough ER) and smooth endoplasmic reticulum (smooth ER). Both types are present in plant and animal cells.
What does endoplasmic reticulum look like for kids?
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. Protein molecules are synthesized and collected in the cisternal space/lumen.
What will happen if the endoplasmic reticulum stopped working?
Explanation: The cell would no longer be able to produce ribosomes which are needed to make proteins. The cell would no longer be able to produce proteins.
What is the location of the endoplasmic reticulum?
The endoplasmic reticulum (ER) is a network of membrane-enclosed tubules and sacs (cisternae) that extends from the nuclear membrane throughout the cytoplasm (Figure 9.1). The entire endoplasmic reticulum is enclosed by a continuous membrane and is the largest organelle of most eukaryotic cells.
Can a cell function without an ER?
Furthermore, in the absence of the RER (Rough Endoplasmic Reticulum), cells cannot synthesize lysosomal enzymes, proteins for extracellular secretion and golgi apparatus as the site of synthesis of these are RER. If the ER is absent, the skeletal muscle fibers would not be able to contract muscles.
What would happen if the ER failed?
If all else fails, the affected cells will self destruct. This is programmed cell death, also called apoptosis, and is the last option the cell has to minimize any damage unfolded or misfolded proteins could cause.
How many types of ER are there?
The ER can be classified in two functionally distinct forms: the smooth endoplasmic reticulum (SER) and the rough endoplasmic reticulum (RER).
What happens in the endoplasmic reticulum?
Are endoplasmic reticulum found in both plants and animals?
Endoplasmic reticulum is an organelle found in both eukaryotic animal and plant cells. It often appears as two interconnected sub-compartments, namely rough ER and smooth ER. Both types consist of membrane enclosed, interconnected flattened tubes.
How does the endoplasmic reticulum relate to football?
This fundamental difference is indicative of their functions: The endoplasmic reticulum synthesizes molecules, while the sarcoplasmic reticulum stores calcium ions and pumps them out into the sarcoplasm when the muscle fiber is stimulated.
Does the endoplasmic reticulum contain DNA?
So if we are speaking of cell organelles that do not contain DNA, then the correct answer is ER (Endoplasmic Reticulum). Answer: Lysosomes and Vacuoles do not contain DNA. Lysosomes are bounded membrane organelles which are found in the cells of animals and plants. Do all organelles have DNA?
What does an endoplasmic reticulum do in an animal cell?
Short answer: Both plant and animal cells (AAMOF most eukaryotic cells) produce proteins via the secretory pathway. The endoplasmic reticulum (ER) is the port of entry of proteins into the endomembrane system, and it is also involved in lipid biosynthesis and storage.