Biology CB15 Quiz Sodium-Potassium Pump

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.

Tags

NGSS.HS-LS1-3

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

Tags

NGSS.HS-LS1-3

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

Tags

NGSS.HS-PS3-5

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