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Are carrier proteins peripheral membrane proteins?
No, carrier proteins are integral membrane proteins that are embedded within the lipid bilayer of the cell membrane. They play a crucial role in transporting molecules across the membrane.
What are proteins embedded in the plasma membrane called?
Proteins embedded in the plasma membrane are called integral membrane proteins. These proteins are permanently attached to the lipid bilayer and play important roles in various cellular functions such as cell signaling, transport, and cell recognition.
What are the special doorways in the cell membrane made of?
Special doorways in the cell membrane are made of proteins called ion channels or transporters. These proteins allow specific ions or molecules to pass through the cell membrane, regulating the movement of substances in and out of the cell.
What are membrane proteins that create a passageway across cell membrane?
These are called channel proteins, which facilitate the passage of specific ions or molecules across the cell membrane. They can be gated or non-gated, and their structure is such that they form a tunnel through which substances can move in or out of the cell.
What are the proteins that identify the cell called?
Proteins that identify cells are known as cell surface markers or cell surface antigens. These proteins play a key role in immune responses and cell recognition, helping the immune system distinguish between self and non-self cells. Examples include major histocompatibility complex (MHC) proteins and CD markers.
