The endoplasmic reticulum
The endoplasmic reticulum (ER) is the system of folded membranes in which proteins, lipids, and other cells parts are made. -Many of the cell’s chemical reactions occur in the endoplasmic reticulum (ER). -The ER acts as an internal delivery system because substances move through the ER to different places in the cell.
Why Golgi apparatus is called the delivery system?
While many types of cells contain only one or several Golgi apparatus, plant cells can contain hundreds. The Golgi apparatus is responsible for transporting, modifying, and packaging proteins and lipids into vesicles for delivery to targeted destinations.
Is endoplasmic reticulum a delivery system?
The endoplasmic reticulum is called the delivery system of the cell. It is an irregular network of double layered membranes distributed over the entire cytoplasm of the cell. It forms the supporting framework and serves as a pathway for the distribution of the materials over teh entire cytoplasm of the cell.
Which is the smallest and the largest cell?
The smallest cell is Mycoplasma (PPLO-Pleuro pneumonia like organims). It is about 10 micrometer in size. The largest cells is an egg cell of ostrich. The longest cell is the nerve cell.
What is the main function of endoplasmic reticulum?
The endoplasmic reticulum (ER) is a large, dynamic structure that serves many roles in the cell including calcium storage, protein synthesis and lipid metabolism. The diverse functions of the ER are performed by distinct domains; consisting of tubules, sheets and the nuclear envelope.
What is the function of RER and SER?
Introduction on Rough and Smooth Endoplasmic Reticulum
| RER-Rough Endoplasmic Reticulum | SER-Smooth Endoplasmic Reticulum |
|---|---|
| They are found near the nucleus of the cell. | They are found away from the nucleus in the cell. |
| Their function is to synthesize proteins. | Their function is to synthesize lipids. |
Which is the shortest cell in human body?
The sperm is the smallest cell in human biology, but also one of the most complex.
What is definition of cell?
Listen to pronunciation. (sel) In biology, the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm.
What is the structure and function of the Golgi body?
The Golgi apparatus is a central intracellular membrane-bound organelle with key functions in trafficking, processing, and sorting of newly synthesized membrane and secretory proteins and lipids. To best perform these functions, Golgi membranes form a unique stacked structure.
What are the 3 main functions of the endoplasmic reticulum?
The endoplasmic reticulum (ER) serves important functions particularly in the synthesis, folding, modification, and transport of proteins.
What are the two main functions of endoplasmic reticulum?
The ER is the largest organelle in the cell and is a major site of protein synthesis and transport, protein folding, lipid and steroid synthesis, carbohydrate metabolism and calcium storage [1–7].
What is difference between RER and SER?
Additional Information: -Ribosomes are the protein factory of the cell hence RER functions for protein synthesis….Complete answer:
| Rough Endoplasmic Reticulum (RER) | Smooth Endoplasmic Reticulum (SER) |
|---|---|
| It is structurally more stable. | It is structurally less stable. |
