15 Questions
What is the main function of the cell membrane?
Creating stable internal conditions
Which term describes the cell membrane's ability to regulate what enters and leaves the cell?
Selective permeability
What is the basic structure of the cell membrane called?
Phospholipid bilayer
What explains the fluidity and lateral movement of components in the cell membrane?
Fluid mosaic model
Which macromolecules are NOT mentioned as components of the cell membrane in the text?
Nucleic acids
What is the amphipathic nature of phospholipids most closely associated with in the cell membrane?
Arrangement in a bilayer
Which of the following is NOT a function of proteins in the cell membrane?
Synthesis of phospholipids
What is the main function of the cell membrane?
Acting as a physical barrier
How do channel proteins differ from transport proteins in the cell membrane?
Transport proteins can be regulated to open during certain times
What is the role of carbohydrates on the outside of the cell membrane?
Acting as a nametag for cell identification
What is the role of insulin in regulating glucose transport?
Activates GLUT4 transport proteins
How do signaling molecules outside the cell initiate changes inside the cell?
Bind to receptors and cause changes in protein activation
What effect does growth hormone binding to cell receptors have?
Causes changes in signal transduction
How does the cell membrane contribute to cell movement and adhesion?
By interacting with the extracellular matrix and other cells
What is the function of integral proteins embedded in the cell membrane?
Connect the cytoskeleton to external components
Explore the structure and function of the cell membrane, also known as the plasma membrane. Learn about its role in maintaining selective permeability, creating a stable internal environment, and regulating what enters and leaves the cell.
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