Unit 2 Cell Transport

Front

What property of the cell membrane allows some molecules to pass easily through, but not all?

Back

Selectively Permeable: This property means that the cell membrane can control what enters and exits the cell, allowing only certain substances to pass through while blocking others.

Front

What is the process called that requires no extra energy by the cell because molecules move from high concentration to low concentration areas?

Back

Passive Transport: This is the movement of molecules across the cell membrane without the use of energy, following the concentration gradient.

Front

What is the process of taking in materials using a vesicle?

Back

Endocytosis: This is a cellular process in which substances are brought into the cell by engulfing them in a vesicle.

Front

What type of solution causes water to rush out of the cell?

Back

Hypertonic Solution: This solution has a higher concentration of solutes compared to the inside of the cell, leading to water moving out of the cell.

Front

What is the transport of ions across the cell membrane called?

Back

Molecular Pumps: These are proteins that use energy to move ions against their concentration gradient across the cell membrane.

Front

What is the term for the movement of water across a selectively permeable membrane?

Back

Osmosis: This is the diffusion of water molecules from an area of low solute concentration to an area of high solute concentration.

Front

What is the term for a solution with the same concentration of solutes as the cell?

Back

Isotonic Solution: In this solution, the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is the process called when materials are expelled from the cell using a vesicle?

Back

Exocytosis: This is the process by which a cell transports secretory products through the cytoplasm to the plasma membrane.

Front

What type of transport requires energy to move substances against their concentration gradient?

Back

Active Transport: This process requires energy (ATP) to move molecules from an area of low concentration to an area of high concentration.

Front

What is the role of protein channels in cell transport?

Back

Protein Channels: These are integral membrane proteins that facilitate the transport of ions and molecules across the cell membrane.