Podcast
Questions and Answers
What is the main purpose of membrane budding and fusion in cells?
What is the main purpose of membrane budding and fusion in cells?
- To hinder cell signaling interactions
- To prevent the distribution of membrane lipids and proteins
- To enable rapid diffusion of membrane proteins within the bilayer plane (correct)
- To ensure uneven distribution of membrane molecules between daughter cells
Which factor does NOT influence the mobility (diffusion) of membrane components according to the Fluid Mosaic Model?
Which factor does NOT influence the mobility (diffusion) of membrane components according to the Fluid Mosaic Model?
- Presence of cholesterol in the membrane (correct)
- Size of the molecule
- Interactions with other molecules
- Temperature
What is one effect of heat on biomembranes below the phase transition temperature?
What is one effect of heat on biomembranes below the phase transition temperature?
- Reduced lipid-protein interactions
- Increased stability of fatty acyl chains
- Fatty acyl chains are in a fluid state
- Fatty acyl chains are in a gel-like state (correct)
How do short C-H chains impact membrane fluidity?
How do short C-H chains impact membrane fluidity?
What is the role of lipid composition in influencing the physical properties of a biomembrane?
What is the role of lipid composition in influencing the physical properties of a biomembrane?
Which specialized membrane function is associated with sphingolipids and phosphoglycerides?
Which specialized membrane function is associated with sphingolipids and phosphoglycerides?
What is the primary function of membranes in living cells?
What is the primary function of membranes in living cells?
Why is the fluidity of eukaryotic membranes important?
Why is the fluidity of eukaryotic membranes important?
Which lipid is the most abundant in biomembranes?
Which lipid is the most abundant in biomembranes?
What is the main function of the Fluid Mosaic Model of biomembranes?
What is the main function of the Fluid Mosaic Model of biomembranes?
In cell signaling, what role do membranes play?
In cell signaling, what role do membranes play?
Why is selective permeability crucial for the plasma membrane?
Why is selective permeability crucial for the plasma membrane?
What is the main role of cholesterol in the phospholipid bilayer?
What is the main role of cholesterol in the phospholipid bilayer?
How does cholesterol affect membrane fluidity in animal cells?
How does cholesterol affect membrane fluidity in animal cells?
Which phospholipid composition would lead to natural curvature in a membrane?
Which phospholipid composition would lead to natural curvature in a membrane?
What is a consequence of having a shorter chain length of hydrocarbon tails in phospholipids?
What is a consequence of having a shorter chain length of hydrocarbon tails in phospholipids?
Which process moves phospholipids from one membrane leaflet to the opposite leaflet?
Which process moves phospholipids from one membrane leaflet to the opposite leaflet?
What is the main determinant of acyl chain mobility in a lipid bilayer?
What is the main determinant of acyl chain mobility in a lipid bilayer?
How do double bonds in fatty acyl chains impact lipid packing?
How do double bonds in fatty acyl chains impact lipid packing?
Which lipid is known to signal for scavenger cells to remove and destroy apoptotic cells?
Which lipid is known to signal for scavenger cells to remove and destroy apoptotic cells?
Which process disturbs the asymmetric distribution of phospholipids in the membrane?
Which process disturbs the asymmetric distribution of phospholipids in the membrane?
What is the main role of phospholipase in regulating membrane composition?
What is the main role of phospholipase in regulating membrane composition?
