The Golgi apparatus collects simple chemicals in the cell and assembles them into large, complex structures such as proteins. It also plays a role in the process of simple chemical secretion by forming closed vesicles around the substance to be transported. These vesicles then pinch off from the Golgi apparatus and drift to the cell's plasma membrane where the transported substance is released from the cell.Continue Reading
The Golgi apparatus, also known as the Golgi complex or body, performs the essential role of sifting through the fragments of various macromolecules in the process of synthesis by the rough endoplasmic reticulum. It gathers these components together, stores some components and transfers others farther along its length for further synthesis before their eventual release. Once the macromolecules are assembled, the Golgi apparatus can either store them until needed or release them immediately for secretion through the cell membrane.
The transport vesicles released by the Golgi apparatus do not pass through the plasma membrane of the cell. Instead, they merge with the membrane, opening as they do so, and simply expose their contents to the bloodstream. This method of cellular transport is highly efficient and, after the initial separation from the complex, does not require the consumption of adenosine triphosphate, or ATP.Learn more about Molecular Biology & DNA
The organelle that modifies and packages proteins is the Golgi apparatus. This organelle comprises several flattened sacs called cisternae. The Golgi apparatus, also called the Golgi body or Golgi complex, has two sides or faces, the cis face and the trans face, as described in "The Cell: A Molecular Approach."Full Answer >
Closely stacked flattened membrane sacs are called the Golgi apparatus or body. The Golgi apparatus of plant or animal cells consists of five to eight flattened sacs called cisternae. The Golgi apparatus packages substances such as proteins and fats to transport them within the cell or out of the cell.Full Answer >
Ribosomes are a type of organelle found in every cell, and their main function is to synthesize proteins for use throughout the cell. In the ribosomes, individual amino acids are arranged into long protein chains according to the sequence of mRNA, or messenger RNA. It is the ribosome's job to read the sequence of mRNA and translate it into the correct sequence of amino acids for each protein that must be made.Full Answer >
Produced by the body's immune system, antibodies, also known as immunoglobulins, are Y-shaped proteins that help identify and remove antigens and other foreign targets such as bacteria and viruses. An antigen is a substance that causes the immune system to react by releasing antibodies. Antigens that enter the body from an external source are exogenous, while antigens produced within cells are endogenous.Full Answer >