Podcast
Questions and Answers
What is the main function of the phospholipid bilayer in cell membranes?
What is the main function of the phospholipid bilayer in cell membranes?
- Acting as a selectively permeable barrier (correct)
- Preventing any materials from entering or leaving the cell
- Supporting active transport mechanisms
- Allowing only water-soluble molecules to enter and leave the cell
Which of the following is NOT one of the 4 basic mechanisms for transport through cell membranes?
Which of the following is NOT one of the 4 basic mechanisms for transport through cell membranes?
- Enzyme Digestion (correct)
- Diffusion
- Bulk Transport
- Active Transport
In the context of solutions, what is the role of a solvent?
In the context of solutions, what is the role of a solvent?
- Facilitating osmosis
- Acting as a barrier around cells
- Being dissolved by the solute
- Doing the dissolving (substance the solute is dissolved in) (correct)
What type of transport mechanism involves moving substances against their concentration gradient?
What type of transport mechanism involves moving substances against their concentration gradient?
Which process allows the movement of large quantities of substances into or out of cells at once?
Which process allows the movement of large quantities of substances into or out of cells at once?
What term is used to describe the type of transport facilitated by uniporters?
What term is used to describe the type of transport facilitated by uniporters?
How does the rate of facilitated diffusion compare to passive diffusion?
How does the rate of facilitated diffusion compare to passive diffusion?
Which transporter is responsible for transporting glucose into most mammalian cells?
Which transporter is responsible for transporting glucose into most mammalian cells?
What is the main function of the Na+/K+ ATPase in animal cells?
What is the main function of the Na+/K+ ATPase in animal cells?
Which type of transport occurs via a limited number of uniporters?
Which type of transport occurs via a limited number of uniporters?
What type of transport is accelerated by uniporters, similar to enzymes?
What type of transport is accelerated by uniporters, similar to enzymes?
What is the function of V-class H+ ATPases in cells?
What is the function of V-class H+ ATPases in cells?
Which family of proteins is responsible for transporting a wide variety of substrates?
Which family of proteins is responsible for transporting a wide variety of substrates?
What is the importance of the AE1 protein in erythrocytes?
What is the importance of the AE1 protein in erythrocytes?
How do most protozoans control cell volume?
How do most protozoans control cell volume?
What is the role of tight junctions in epithelia?
What is the role of tight junctions in epithelia?
How do excitatory neurotransmitters affect the postsynaptic membrane?
How do excitatory neurotransmitters affect the postsynaptic membrane?
