Podcast
Questions and Answers
What type of structure do phospholipids with small tails or a single hydrocarbon chain form?
What type of structure do phospholipids with small tails or a single hydrocarbon chain form?
- Bilayer
- Micelle (correct)
- Liposome
- Vesicle
What is the structure formed by phospholipids with bulkier tails or two hydrophobic tails?
What is the structure formed by phospholipids with bulkier tails or two hydrophobic tails?
- Liposome (correct)
- Vesicle
- Bilayer
- Micelle
What is the danger signal that can trigger an inflammatory reaction in surrounding cells when there are alterations in phospholipid asymmetry?
What is the danger signal that can trigger an inflammatory reaction in surrounding cells when there are alterations in phospholipid asymmetry?
- Phosphatidylserine exposure (correct)
- Oxidative damage
- Cholesterol flipping
- Phospholipid head group changes
What is the main function of cholesterol in maintaining cell membrane structure?
What is the main function of cholesterol in maintaining cell membrane structure?
What is the structure of cholesterol?
What is the structure of cholesterol?
What is the main function of cell membranes?
What is the main function of cell membranes?
What is the term used to describe molecules that contain both hydrophilic and hydrophobic regions?
What is the term used to describe molecules that contain both hydrophilic and hydrophobic regions?
Which part of a phospholipid faces the aqueous intracellular or extracellular space?
Which part of a phospholipid faces the aqueous intracellular or extracellular space?
Why do phospholipids spontaneously form lipid bilayers in an aqueous environment?
Why do phospholipids spontaneously form lipid bilayers in an aqueous environment?
What type of bond attaches the two leaflets together in a lipid bilayer?
What type of bond attaches the two leaflets together in a lipid bilayer?
What is the primary function of the plasma membrane?
What is the primary function of the plasma membrane?
Which of the following is NOT a major component of the plasma membrane?
Which of the following is NOT a major component of the plasma membrane?
According to the fluid-mosaic model, the plasma membrane is in a:
According to the fluid-mosaic model, the plasma membrane is in a:
Which of the following is NOT a function of membrane proteins?
Which of the following is NOT a function of membrane proteins?
What is the significance of Cell Adhesion Molecules (CAMs) in the plasma membrane?
What is the significance of Cell Adhesion Molecules (CAMs) in the plasma membrane?
What happens to the fluidity of the cell membrane during hypothermia?
What happens to the fluidity of the cell membrane during hypothermia?
How does hypothermia affect the cell membrane's permeability?
How does hypothermia affect the cell membrane's permeability?
What is the role of the cell membrane in regulating traffic in and out of the cell?
What is the role of the cell membrane in regulating traffic in and out of the cell?
How does returning to normal body temperature affect the cell membrane's fluidity?
How does returning to normal body temperature affect the cell membrane's fluidity?
What could be a possible consequence of decreased cell membrane fluidity during hypothermia?
What could be a possible consequence of decreased cell membrane fluidity during hypothermia?
How does cholesterol affect the mobility of the first few CH2 groups in the fatty acid chains in the lipid bilayer?
How does cholesterol affect the mobility of the first few CH2 groups in the fatty acid chains in the lipid bilayer?
At low temperatures, how does cholesterol influence the hydrocarbon chains of lipids in the membrane?
At low temperatures, how does cholesterol influence the hydrocarbon chains of lipids in the membrane?
Which function is NOT associated with membrane fluidity?
Which function is NOT associated with membrane fluidity?
In the clinical case of hypothermia, how does the patient's condition relate to the membrane's ability to adapt to environmental changes?
In the clinical case of hypothermia, how does the patient's condition relate to the membrane's ability to adapt to environmental changes?
Which process is NOT supported by proper membrane fluidity?
Which process is NOT supported by proper membrane fluidity?
What is the primary function of the plasma membrane?
What is the primary function of the plasma membrane?
What is the term used to describe molecules that contain both hydrophilic and hydrophobic regions?
What is the term used to describe molecules that contain both hydrophilic and hydrophobic regions?
Which of the following is NOT a major component of the plasma membrane?
Which of the following is NOT a major component of the plasma membrane?
What is one process involved in the correction of YD's hyperkalemia?
What is one process involved in the correction of YD's hyperkalemia?
What is the main function of cholesterol in maintaining cell membrane structure?
What is the main function of cholesterol in maintaining cell membrane structure?
Which of the following molecules can freely diffuse across the cell membrane?
Which of the following molecules can freely diffuse across the cell membrane?
What happens to the rate of diffusion when the temperature increases?
What happens to the rate of diffusion when the temperature increases?
What is the direction of water movement in a hypotonic solution?
What is the direction of water movement in a hypotonic solution?
What is the role of aquaporins in the cell membrane?
What is the role of aquaporins in the cell membrane?
What is the term used to describe the movement of molecules from a region of high concentration to a region of low concentration?
What is the term used to describe the movement of molecules from a region of high concentration to a region of low concentration?
What is the term for the process where molecules are moved out of the cell by vesicles that fuse with the plasma membrane?
What is the term for the process where molecules are moved out of the cell by vesicles that fuse with the plasma membrane?
Which form of endocytosis involves the cell forming an invagination to bring dissolved materials into the cell?
Which form of endocytosis involves the cell forming an invagination to bring dissolved materials into the cell?
In which type of transport do all solutes move in the same direction 'to the inside of the cell'?
In which type of transport do all solutes move in the same direction 'to the inside of the cell'?
What is the process used to engulf large particles such as food or bacteria into vesicles?
What is the process used to engulf large particles such as food or bacteria into vesicles?
Which type of transport process involves moving two molecules or ions in opposite directions?
Which type of transport process involves moving two molecules or ions in opposite directions?
Which of the following statements about facilitated diffusion is correct?
Which of the following statements about facilitated diffusion is correct?
How does the sodium-potassium pump work?
How does the sodium-potassium pump work?
What is the difference between cotransport and symport in secondary active transport?
What is the difference between cotransport and symport in secondary active transport?
What is the role of ATP in primary active transport?
What is the role of ATP in primary active transport?
Which of the following statements about carrier proteins is correct?
Which of the following statements about carrier proteins is correct?
What is the primary function of the cell membrane in maintaining homeostasis?
What is the primary function of the cell membrane in maintaining homeostasis?
What is the primary driving force for simple diffusion across the cell membrane?
What is the primary driving force for simple diffusion across the cell membrane?
Which of the following is NOT a factor that is homeostatically regulated within the body?
Which of the following is NOT a factor that is homeostatically regulated within the body?
What is the primary driving force for the movement of fluids between fluid compartments in the body?
What is the primary driving force for the movement of fluids between fluid compartments in the body?
Which of the following statements about membrane transport and homeostasis is correct?
Which of the following statements about membrane transport and homeostasis is correct?
