Active Transport Notes

Multiple Choice

What is the function of ATP?

• ATP is used for storing genetic information.
• ATP functions as a structural component of cells.
• ATP acts as a signaling molecule in the bloodstream.
• The function of ATP is to provide energy for cells.

Multiple Choice

Which of the following statements best describes active transport?

• It moves molecules from high to low concentration without energy.

• It moves molecules from low to high concentration using ATP.

• It moves molecules from high to low concentration using ATP.

• It moves molecules from low to high concentration without energy.

Multiple Select

What is true about active transport? (select all that apply)

• Uses ATP for energy

• Molecules move against the gradient

• Moves from high to low

• Molecules move with the gradient

Multiple Choice

How does the sodium-potassium pump maintain concentration gradients across the cell membrane?

• By moving sodium and potassium ions from high to low concentration

• By moving sodium ions into the cell and potassium ions out of the cell

• By using ATP to move sodium ions out of the cell and potassium ions into the cell

• By allowing ions to diffuse freely across the membrane

Hotspot

Tap on all the pictures of ACTIVE transport.

Fill in the Blanks

Cells use energy (ATP) to transport molecules

the cell by a vesicle that pinches off from the cell membrane.

Multiple Select

Which of the following are types of endocytosis?

• Phagocytosis

• Pinocytosis

• Exocytosis

• Diffusion

Multiple Choice

Which process involves the cell taking in fluids and solutes from the extracellular environment?

• Pinocytosis

• Exocytosis

• Phagocytosis

• Osmosis

Fill in the Blanks

The process by which cells expel molecules out of the cell using vesicles is called

.

Multiple Select

Which of the following statements about protein pumps is/are correct?

• They use ATP to move substances against the concentration gradient.

• They move substances from low to high concentration.

• They are a type of active transport.

• They allow passive diffusion of molecules.

Multiple Choice

Based on the diagram, what is the main difference between exocytosis and endocytosis?

• Exocytosis moves substances out of the cell, while endocytosis brings substances into the cell.

• Exocytosis uses protein pumps, while endocytosis uses vesicles.

• Exocytosis requires no energy, while endocytosis does.

• Exocytosis only occurs in plant cells.