0
What else can I help you with?
Are masses of cells full of pores?
Cells are not full of pores. Cell membranes have specific transport proteins that allow certain substances to enter or exit the cell. These transport proteins regulate the movement of molecules in and out of the cell, preventing large molecules from freely flowing in and out of the cell.
What is the characteristic of a cell membrane that controls which substances that can either enter and exit the cell?
Selective permeable
What role do proteins play in the structure and function of plasma membranes?
Proteins in plasma membranes help maintain the structure and regulate the functions of cells by serving as channels for molecules to enter and exit the cell, as well as facilitating cell signaling and recognition.
What is the characteristic of the cell membrane that controls witch substance can enter the exit the cell?
The cell membrane exhibits selective permeability, allowing it to control which substances can enter and exit the cell. This characteristic is primarily due to its phospholipid bilayer structure, which is embedded with proteins that facilitate transport. Small, nonpolar molecules can easily pass through, while larger or charged substances require specific transport proteins or channels. This selective control is essential for maintaining homeostasis within the cell.
Can everything go in and out of the cell?
No, not everything can go in and out of a cell. Cell membranes are selectively permeable, meaning they allow certain substances to pass while blocking others. Small molecules like water and gases can diffuse freely, while larger or charged molecules require specific transport proteins or channels to enter or exit the cell. This selective permeability is crucial for maintaining the cell's internal environment and overall function.
How substance are able to enter and exit a cell?
osmosis
Why do materials enter and exit the cell?
To get to the other side
What cell structure is responsible for regulating the materials that enter and exit the cell?
cell membrane
In what form do proteins enter the cells of the body?
Proteins enter cells through receptor-mediated endocytosis, where the protein binds to a specific receptor on the cell surface and is engulfed by the cell in a vesicle. Alternatively, some proteins can pass through the cell membrane via protein channels or transporters.
What is used to help substances enter or exit the cell?
Osmosis
What is the characteristic of a sell membrane that controls which substances can enter and exit the cell?
The selective permeability, also called semi-permeability, of the membrane controls which substances cant enter and exit the cell.
How does a cell allow small molecules enter and exit?
"The cell membrane has openings in it." (PLATO) (:
