What is endoplasmic reticulum?
Understand the Problem
The question is asking for a definition and explanation of the endoplasmic reticulum, a cellular organelle. The endoplasmic reticulum is involved in various functions such as protein and lipid synthesis and is a key component of the cell's internal structure.
Answer
The endoplasmic reticulum is a network of membrane-enclosed tubules and sacs responsible for protein synthesis and transport in eukaryotic cells.
The endoplasmic reticulum (ER) is the largest organelle in eukaryotic cells, consisting of a network of membrane-enclosed tubules and sacs known as cisternae. It extends from the nuclear membrane throughout the cytoplasm, playing key roles in protein synthesis, folding, transport, and lipid biosynthesis.
Answer for screen readers
The endoplasmic reticulum (ER) is the largest organelle in eukaryotic cells, consisting of a network of membrane-enclosed tubules and sacs known as cisternae. It extends from the nuclear membrane throughout the cytoplasm, playing key roles in protein synthesis, folding, transport, and lipid biosynthesis.
More Information
Endoplasmic reticulum can be rough (covered with ribosomes) and involved in protein synthesis, or smooth (lacking ribosomes) and involved in lipid synthesis and detoxification processes.
Tips
Confusing the two types of ER, rough and smooth, is common. Remember, rough ER is studded with ribosomes for protein synthesis, while smooth ER synthesizes lipids.
Sources
- Endoplasmic reticulum (ER) | Definition, Function, & Location - britannica.com
- Endoplasmic Reticulum - Structure and its Functions - BYJU'S - byjus.com
- Endoplasmic Reticulum (Rough and Smooth) - bscb.org
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