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WorksheetsBiology CB15 Quiz Sodium-Potassium Pump
Total questions: 10
Worksheet time: 5mins
Active transport is the energy-requiring process of pumping molecules and ions across membranes "uphill" - against a concentration gradient. To move these molecules against their concentration gradient, a ___________ protein is needed.
carrier
transport
ATP
ADP
This molecule powers the sodium-potassium pump.
ATP
ADP
sodium
potassium
Energy from ATP changes the carrier protein's _______ to move molecules in and out of the cell.
charge
temperature
shape
position
Which is true of the sodium-potassium pump?
It moves potassium into the cell and sodium out of the cell.
It moves sodium into the cell and potassium out of the cell.
It moves both sodium and potassium into the cell.
It moves both sodium and potassium out of the cell.
How many sodium ions are moved by the sodium potassium pump?
How many potassium ions are moved by the sodium potassium pump?
four sodium ions,
two potassium ions
two sodium ions,
four potassium ions
three sodium ions,
two potassium ions
one sodium ion,
four potassium ions
The sodium-potassium pump is found in the cell membrane of almost every plant cell and is common to bacteria.
true
false
The active transport of ions across the membrane causes an _______________ gradient to build up across the cell membrane.
concentration
electrical
protein
carrier
This is the electrical potential energy that is caused by a separation of opposite charges.
voltage
ATP
concentration gradient
active transport
The voltage across a membrane is called___________________.
membrane potential
the sodium-potassium pump
ATP
electrochemical gradient
What are the are two forces that drive the diffusion of ions across the cell membrane?
chemical
gravitational
electrical
physical
