This organelle is similar to a system of hallways in a building or roadways in a city. Proteins and other materials move throughout the cell through this organelle.
The organelle being described here is the endoplasmic reticulum (ER). The ER is a network of interconnected tubules and flattened sacs that extends throughout the cytoplasm of eukaryotic cells. It acts as a transportation system within the cell, allowing for the movement of proteins, lipids, and other materials from one part of the cell to another. The ER plays a crucial role in protein synthesis, folding, and modification, as well as lipid synthesis and detoxification processes. Just like hallways or roadways in a building or city, the ER provides pathways for efficient movement and distribution of materials within the cell.
his organelle is similar to a system of hallways in a building or roadways in a city. Proteins and other materials move throughout the cell through this organelle.
A.
Ribosomes
B.
Endoplasmic Reticulum
C.
Golgi Bodies
B. Endoplasmic Reticulum
This organelle receives proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell. Also known as the post office of a cell.
A.
Lysosome
B.
Cell Membrane
C.
Golgi Bodies
C. Golgi Bodies
The organelle that is similar to a system of hallways in a building or roadways in a city, through which proteins and other materials move throughout the cell, is called the endoplasmic reticulum (ER). The ER is a network of flattened sacs, tubes, and interconnected channels that extend throughout the cytoplasm of the cell. It plays a crucial role in protein synthesis, modification, and transport. There are two types of ER: the rough endoplasmic reticulum (RER), which is studded with ribosomes on its surface and involved in the production of proteins, and the smooth endoplasmic reticulum (SER), which lacks ribosomes and plays a role in lipid metabolism and detoxification.
The organelle you are referring to is the endoplasmic reticulum (ER). It is a network of membranes that extends throughout the cytoplasm of eukaryotic cells, including plant and animal cells. It has two types: the rough endoplasmic reticulum (RER) and the smooth endoplasmic reticulum (SER).
To understand why the ER is compared to a system of hallways in a building or roadways in a city, we need to look at its structure and function. The ER is made up of interconnected tubules and flattened sacs called cisternae. These membrane structures form a complex, branching network within the cell, resembling a system of hallways or roadways.
The RER gets its name from the ribosomes attached to its surface, giving it a rough appearance under a microscope. These ribosomes are responsible for protein synthesis. When proteins are synthesized by the ribosomes, they are threaded into the interior of the RER, where they undergo modifications and folding. This process allows for the proper structure and function of proteins. After modification, proteins are packaged into transport vesicles for delivery to other parts of the cell or for secretion outside the cell.
The SER, on the other hand, lacks ribosomes and appears smoother under a microscope. It has various functions depending on the specific cell type. For example, hepatic (liver) cells have abundant SER, where it plays a role in detoxifying drugs and producing lipids. Muscle cells have a specialized type of SER called sarcoplasmic reticulum, which stores and releases calcium ions required for muscle contractions.
Just like hallways or roadways in a building or city, the ER provides a system of passageways that allow proteins and other materials to move throughout the cell. It acts as a transportation network, facilitating the movement and delivery of proteins synthesized by the ribosomes, as well as lipids and other molecules. Additionally, the ER plays a crucial role in maintaining cell structure and participating in various cellular processes.
To summarize, the ER is compared to a system of hallways or roadways due to its membranous network, which enables the movement and transport of proteins and other materials within the cell. Understanding this analogy helps us visualize the inner workings of cells and how cellular components interact and function.