Podcast
Questions and Answers
What type of proteins bind to molecules and change shape to shuttle them across the membrane?
What type of proteins bind to molecules and change shape to shuttle them across the membrane?
- Channel proteins
- Carrier proteins (correct)
- Transport proteins
- Pumps
What force decides the direction of transport based on the concentration of what is being moved?
What force decides the direction of transport based on the concentration of what is being moved?
- Chemical force (correct)
- Electrochemical gradient
- Electrical force
- Passive transport
What type of transport requires the hydrolysis of ATP (or GTP) to move substances?
What type of transport requires the hydrolysis of ATP (or GTP) to move substances?
- Pumps (correct)
- Passive transport
- Diffusion
- Facilitated transport
What is the difference in electric charge between the inside and outside of the cell called?
What is the difference in electric charge between the inside and outside of the cell called?
How can membrane potential be measured?
How can membrane potential be measured?
What property of the plasma membrane allows cells to control the concentration of ions in and out side of the cell?
What property of the plasma membrane allows cells to control the concentration of ions in and out side of the cell?
What type of molecules cross the membrane easily due to their ability to dissolve in the lipid bilayer?
What type of molecules cross the membrane easily due to their ability to dissolve in the lipid bilayer?
In which type of transport do molecules move from low concentration to high concentration using energy from ATP hydrolysis?
In which type of transport do molecules move from low concentration to high concentration using energy from ATP hydrolysis?
What is the ability of a solution to cause a cell to gain or lose water called?
What is the ability of a solution to cause a cell to gain or lose water called?
Which type of transport protein speeds the passive movement of molecules across the membrane down the gradient?
Which type of transport protein speeds the passive movement of molecules across the membrane down the gradient?
What type of transport requires the expenditure of energy and usually provides it through the hydrolysis of ATP?
What type of transport requires the expenditure of energy and usually provides it through the hydrolysis of ATP?
