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.

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

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.