University of the people
Written assignment unit 3
BIOL 1121 - AY2018-T1
Briefly describe the structure of a eukaryotic plasma membrane, identifying at least two component macromolecules and describing what their basic function is within the membrane.
The eukaryotic plasma membrane is a phospholipids bilayer containing proteins and carbohydrates attached to the proteins and sterols. It is a fluid phospholipids bilayer embedded with proteins and glycoprotein. The phospholipids bilayer is arranged in such a manner that they form the center of the membrane. They also contain sterols, which makes the membrane less permeable and helps to stabilize the membrane and add the rigidity to membranes.
Summarized the manner in which small molecules are …show more content…
Because ATP or other energetic compounds are not directly involved in co-transport, it is referred to as secondary active transport. The electrochemical ion gradient is mainly established by the Na+,K+-ATPase. Facilitated diffusion is an example of passive diffusion, but aided by membrane-spanning channel proteins that span the lipid bilayer. Therefore, the particles (molecules or ions) do not have to dissolve in the cell membrane's hydrophobic lipid bilayer, allowing hydrophilic and larger molecules (carbohydrates, ions) to be transported into the …show more content…
This discharge is accompanied by the fusion of the vesicular membrane and the plasma membrane. This process is carried out in three ways that separately involve the molecular constituents like endosomes, lysosomes, exosomes, neurotransmitters, etc. Exocytosis Release enzymes, hormones, proteins and glucose to be used in other parts of the body. While In endocytosis, the body cells ingest various molecules such as proteins, polar molecules, and other substances, through their hydrophobic plasma membrane. This process is carried out by many eukaryotic cells to ingest food particles by surrounding them, and in this case, the plasma membrane is extended outwards. The basic mechanism of both the processes of exocytosis and endocytosis, is more or less the same. Vesicles are the structures used for the transportation of molecules. They are also used for storage and transportation of food. Also, many bacteria and pathogens may enter the body by this process. These structures may have a completely different internal composition as compared to that of the body cells. Endocytosis helps in receiving nutrients and also aids in cells migration and
Written assignment unit 3
BIOL 1121 - AY2018-T1
Briefly describe the structure of a eukaryotic plasma membrane, identifying at least two component macromolecules and describing what their basic function is within the membrane.
The eukaryotic plasma membrane is a phospholipids bilayer containing proteins and carbohydrates attached to the proteins and sterols. It is a fluid phospholipids bilayer embedded with proteins and glycoprotein. The phospholipids bilayer is arranged in such a manner that they form the center of the membrane. They also contain sterols, which makes the membrane less permeable and helps to stabilize the membrane and add the rigidity to membranes.
Summarized the manner in which small molecules are …show more content…
Because ATP or other energetic compounds are not directly involved in co-transport, it is referred to as secondary active transport. The electrochemical ion gradient is mainly established by the Na+,K+-ATPase. Facilitated diffusion is an example of passive diffusion, but aided by membrane-spanning channel proteins that span the lipid bilayer. Therefore, the particles (molecules or ions) do not have to dissolve in the cell membrane's hydrophobic lipid bilayer, allowing hydrophilic and larger molecules (carbohydrates, ions) to be transported into the …show more content…
This discharge is accompanied by the fusion of the vesicular membrane and the plasma membrane. This process is carried out in three ways that separately involve the molecular constituents like endosomes, lysosomes, exosomes, neurotransmitters, etc. Exocytosis Release enzymes, hormones, proteins and glucose to be used in other parts of the body. While In endocytosis, the body cells ingest various molecules such as proteins, polar molecules, and other substances, through their hydrophobic plasma membrane. This process is carried out by many eukaryotic cells to ingest food particles by surrounding them, and in this case, the plasma membrane is extended outwards. The basic mechanism of both the processes of exocytosis and endocytosis, is more or less the same. Vesicles are the structures used for the transportation of molecules. They are also used for storage and transportation of food. Also, many bacteria and pathogens may enter the body by this process. These structures may have a completely different internal composition as compared to that of the body cells. Endocytosis helps in receiving nutrients and also aids in cells migration and