12 Questions
What is the primary distinction between integral and peripheral proteins in membrane structure?
Their location within the membrane bilayer
Which type of endocytosis is involved in the uptake of large particles such as viruses or bacteria?
Phagocytosis
What is the primary function of coated pits in receptor-mediated endocytosis?
To internalize the receptor-ligand complex
Which of the following molecules is NOT an example of a macromolecule released from the cell through exocytosis?
Glucose
What is the primary difference between membrane transport of small molecules and macromolecules?
The size of the molecules
What is the function of glycoproteins in membrane structure?
To provide structural support
What is a primary function of the cell membrane?
To separate the cytoplasm from its extracellular environment
What is the primary function of cholesterol in the cell membrane?
To regulate the fluidity of all membrane components
Which type of lipid molecule is characterized by its hydroxyl group facing the aqueous interface?
Cholesterol
What is the term used to describe the property of membrane lipids that contain both hydrophobic and hydrophilic regions?
Amphipathic
What is the primary function of phospholipids in the cell membrane?
To form the lipid bilayer
Which of the following is NOT a function of the cell membrane?
Synthesizing proteins
This quiz covers the importance of cell membranes, including their selective permeability and exchange of materials with the extracellular environment. It also delves into the structure of membranes, including their composition and components.
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