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The outer layer of the cell is the cell membrane. This membrane is made up of phospholipids which themselves are made of a polar phosphate head and a non-polar fatty acid tail. The polar heads face the exterior and interior of the cell while the fatty acid tails comprise the interior of the membrane that is created by this arrangement. The membrane acts like a "gatekeeper" for 2 reasons:
1) water and ions can diffuse freely across the membrane while larger molecules cannot
2) a vast variety of proteins are embedded in the membrane and they allow certain ions and even larger molecules to flow to the interior of the cell.
This "gatekeeper" function is important for maintaining the cells internal activities.
The outer layer of a cell that acts as a gatekeeper is the cell membrane. It controls the movement of substances in and out of the cell, allowing nutrients to enter and waste products to exit. The cell membrane is selectively permeable, meaning it regulates which molecules can pass through.
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What is the outer edge of an animal cell called?
The outer edge of an animal cell is called the cell membrane, or plasma membrane. It acts as a selectively permeable barrier, regulating the passage of substances in and out of the cell.
What is the outer layer of a prokaryote cell called?
The outer layer of a prokaryote cell is called the cell wall. It provides structure and protection to the cell, and is typically made of a rigid material like peptidoglycan.
What is the flexible outer layer of the cell called?
The flexible outer layer of the cell is called the cell membrane. It is a semi-permeable barrier that surrounds the cell, controlling the passage of substances in and out of the cell.
Thick outer covering of a plant cell?
The thick outer covering of a plant cell is the cell wall. It provides structural support and protection to the cell, as well as regulating the passage of molecules in and out of the cell. It is made up of cellulose and other polysaccharides.
What cell part is rigid an outer layer?
The cell wall is rigid and is located on the outer layer of plant cells. It provides structural support and protection to the cell.
What The outer layer of a cell that acts as a gatekeeper to a cell is the?
Plasma membrane
What is the outer layer of a cell that acts as a gatekeeper to a cell?
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.
What is the stiff outer layer that surrounds the outer layer of the cell membrane?
cell membrane
What is the outer edge of an animal cell called?
The outer edge of an animal cell is called the cell membrane, or plasma membrane. It acts as a selectively permeable barrier, regulating the passage of substances in and out of the cell.
Where is a cell membrane found in?
In a plant cell it is located just inside of the cell wall (outer layer). In an animal cell, the cell membrane is the outer layer.
Where is the membrane found in a cell?
In a plant cell it is located just inside of the cell wall (outer layer). In an animal cell, the cell membrane is the outer layer.
What is the outer layer of a cell that selects what comes in and out?
The outer layer of a cell that selects what comes in and out is called the cell membrane. It is a selectively permeable barrier that controls the passage of substances like nutrients and waste in and out of the cell.
Is the outer layer of skin a cell?
The cell membrane
What is the outer surrounding layer of plant and animal cell?
The outer surrounding layer of a plant cell is the cell wall, which provides structure and support. In an animal cell, the outer layer is the cell membrane, which controls the movement of substances in and out of the cell.
What is the outer layer of a prokaryote cell called?
The outer layer of a prokaryote cell is called the cell wall. It provides structure and protection to the cell, and is typically made of a rigid material like peptidoglycan.
What is a cell mebrain?
Outer layer of the cell used to protect it.
Where does squamous cell carcinoma occurs in what layer of the skin?
outer layer
