2022 Cell Transport

Front

What is the primary function of embedded proteins in the plasma membrane?

Back

Embedded proteins allow certain kinds of molecules to enter or leave a cell.

Front

Which diagram represents active transport?

Back

Diagram 3 represents active transport.

Front

What process is depicted in the image showing movement against the concentration gradient?

Back

The image shows active transport.

Front

In which direction does water (H₂O) move in relation to the cell during osmosis?

Back

Water moves out of the cell.

Front

What is required for active transport?

Back

Active transport requires ATP.

Front

What direction does active transport move materials?

Back

Active transport moves materials from low to high concentration.

Front

How does active transport differ from passive transport?

Back

Active transport requires energy (ATP) to move substances against their concentration gradient, while passive transport does not require energy and moves substances down their concentration gradient.

Front

What is the role of ATP in cellular transport mechanisms?

Back

ATP provides the energy necessary for active transport processes.

Front

Define osmosis in the context of cell transport.

Back

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the significance of the concentration gradient in transport processes?

Back

The concentration gradient determines the direction of movement for substances; substances move from areas of higher concentration to areas of lower concentration in passive transport.