transport MAAP review

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

How does the cell membrane help maintain homeostasis?

Back

The cell membrane helps maintain homeostasis by allowing molecules to move into and out of the cell as needed.

Front

What is homeostasis?

Back

Homeostasis is the ability of an organism to maintain a relatively stable internal environment despite changes in external conditions.

Front

What happens to a blood cell in an isotonic solution?

Back

In an isotonic solution, water moves equally in and out of the cell, maintaining its shape.

Front

What is the direction of movement in active transport?

Back

Active transport moves substances from low concentration to high concentration.

Front

What is diffusion?

Back

Diffusion is the passive movement of molecules from an area of high concentration to an area of low concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others.

Front

What is the role of proteins in the cell membrane?

Back

Proteins in the cell membrane assist in transport, act as receptors, and provide structural support.