That would be the "guard cells". The stoma is an opening on the underside of many leaves and each stoma is bordered by a pair of guard cells that open and close the pore to allow for "transpiration" (the passage of water in either gaseous or liquid form into or out of the leaf). In hot, dry weather, the guard cells close to prevent water loss. In humid weather, the guard cells allow the pore to open and water can enter.
The outer layer of a cell that acts as a gatekeeper is called the cell membrane. It regulates the movement of substances in and out of the cell to maintain internal balance.
It just does you better belive that
Plasma membrane
acts as a gatekeeper
The cell membrane is often referred to as "not just a bag but a fluid mosaic gatekeeper." This description highlights its dynamic nature, with proteins and lipids constantly moving within the membrane, allowing it to regulate the flow of molecules in and out of the cell. It serves as a selective barrier that controls the passage of substances into and out of the cell.
The organelle that functions like the gatekeeper of the cell is the cell membrane, also known as the plasma membrane. It regulates the entry and exit of substances, maintaining the cell's internal environment by allowing selective permeability. This ensures that essential nutrients can enter while waste products and harmful substances are kept out. Additionally, the cell membrane plays a role in cell signaling and communication with other cells.
For an animal cell it is the cell wall. For a plant cell it is the cell membrane. In an animal cell the cell membrane is right inside the cell wall. The cell membrane is known as "The Gatekeeper" and is the main security of the cell.
The Gatekeeper happened in 2004.
That would be the "guard cells". The stoma is an opening on the underside of many leaves and each stoma is bordered by a pair of guard cells that open and close the pore to allow for "transpiration" (the passage of water in either gaseous or liquid form into or out of the leaf). In hot, dry weather, the guard cells close to prevent water loss. In humid weather, the guard cells allow the pore to open and water can enter.
The structure that covers the entire cell and acts as a gatekeeper to control the movement of materials in and out of the cell is the plasma membrane, also known as the cell membrane. Composed primarily of a phospholipid bilayer with embedded proteins, it selectively allows substances to enter or exit the cell, maintaining homeostasis. This selective permeability is crucial for various cellular processes, including nutrient uptake and waste removal.
Gatekeeper - butterfly - was created in 1767.
gatekeeperGléidheadair-geatais 'gatekeeper'.