plasma membrane Flashcards
What is the main function of the plasma membrane?
To regulate the movement of substances in and out of the cell.
True or False: The plasma membrane is selectively permeable.
True
What is the basic structure of the plasma membrane?
A phospholipid bilayer.
What are the two main components of the plasma membrane?
Phospholipids and proteins.
What type of molecules can easily pass through the plasma membrane?
Small, non-polar molecules.
What is the role of cholesterol in the plasma membrane?
To help maintain membrane fluidity and stability.
What are the two types of proteins found in the plasma membrane?
Integral proteins and peripheral proteins.
Fill in the blank: The plasma membrane is composed of a ________ bilayer.
Phospholipid
What is the glycocalyx on the plasma membrane?
A carbohydrate coating that helps with cell recognition.
What is the role of transport proteins in the plasma membrane?
To facilitate the movement of specific substances across the membrane.
True or False: The plasma membrane is a rigid structure.
False
What is the function of receptor proteins in the plasma membrane?
To bind to specific molecules and initiate cellular responses.
What is the purpose of the fluid mosaic model in describing the plasma membrane?
To illustrate the dynamic and diverse nature of the membrane.
What is the role of cell adhesion molecules in the plasma membrane?
To help cells stick together and communicate with each other.
What is the significance of the asymmetrical distribution of lipids in the plasma membrane?
It plays a role in cell signaling and recognition.
