Podcast
Questions and Answers
What are the 4 components of cellular membranes?
What are the 4 components of cellular membranes?
- Phospholipid monolayer, transmembrane proteins, peripheral protein network, cell wall markers
- Cholesterol bilayer, transmembrane lipids, interior protein network, cell surface receptors
- Phospholipid bilayer, peripheral proteins, interior protein network, cell wall markers
- Phospholipid bilayer, transmembrane proteins, interior protein network, cell surface markers (correct)
What makes the fatty acids in phospholipids hydrophobic?
What makes the fatty acids in phospholipids hydrophobic?
- Their polar nature
- Their nonpolar nature (correct)
- Their hydrophilic nature
- Their interaction with phosphate groups
What characterizes integral membrane proteins?
What characterizes integral membrane proteins?
- Have no interaction with the lipid bilayer
- Only exist on the surface of the membrane
- Possess at least one transmembrane domain (correct)
- Are free to move throughout the bilayer
What is the movement of molecules through the membrane in passive transport?
What is the movement of molecules through the membrane in passive transport?
What is the process of movement of water from an area of high to low concentration of water?
What is the process of movement of water from an area of high to low concentration of water?
In passive transport, which solution has a higher solute concentration?
In passive transport, which solution has a higher solute concentration?
What regulates the flow of water through aquaporins in the cell membrane?
What regulates the flow of water through aquaporins in the cell membrane?
What is the movement of molecules from high concentration to low concentration in passive transport?
What is the movement of molecules from high concentration to low concentration in passive transport?
What type of proteins allow the cell to be selective about what passes through the membrane?
What type of proteins allow the cell to be selective about what passes through the membrane?
What is the main difference between channel proteins and carrier proteins?
What is the main difference between channel proteins and carrier proteins?
What is the process of movement of a molecule from high to low concentration with the help of a carrier protein called?
What is the process of movement of a molecule from high to low concentration with the help of a carrier protein called?
Which type of transport requires energy and moves substances from low to high concentration?
Which type of transport requires energy and moves substances from low to high concentration?
What is the main difference between uniporters, symporters, and antiporters?
What is the main difference between uniporters, symporters, and antiporters?
What is the main function of the sodium-potassium (Na+-K+) pump?
What is the main function of the sodium-potassium (Na+-K+) pump?
What is the process of movement of substances into the cell called?
What is the process of movement of substances into the cell called?
What type of transport involves the movement of materials out of the cell?
What type of transport involves the movement of materials out of the cell?
