10 Questions
What is the primary function of proteins that act as carriers?
To transport substances down electrochemical gradients by facilitated diffusion
Which of the following is NOT a function of proteins mentioned in the text?
Regulating gene expression
Where are the hydrophobic portions of membrane proteins typically located?
In the interior of the membrane
Which of the following is an example of a protein held by a glycosylphosphatidylinositol (GPI) anchor?
Alkaline phosphatase
What is the function of ion channel proteins?
To permit the passage of ions into or out of the cell when activated
What is the primary structural arrangement of the cell membrane?
Lipid bilayer
Which of the following is NOT a major lipid component of the cell membrane?
Triglycerides
What property of lipids allows them to form the membrane structure?
Their amphipathic nature
Which of the following is NOT a function of proteins in the cell membrane?
Photosynthesis
What distinguishes integral proteins from peripheral proteins in the cell membrane?
Integral proteins pass through the membrane, while peripheral proteins are located on the surface
This quiz covers the structure and composition of the cell membrane, discussing its thin and elastic nature, lipid bilayer arrangement, and the main components such as proteins and phospholipids. Learn about the phosphate head and fatty acid tails of phospholipid molecules.
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