Cellular Transport Flashcard

Front

What is diffusion?

Back

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

Front

What is an example of diffusion?

Back

Examples of diffusion include the spreading of perfume in a room, the movement of oxygen from the lungs into the blood, and the dispersal of food coloring in water.

Front

What type of transport involves the use of protein channels to move substances across a membrane?

Back

Facilitated diffusion.

Front

What part of a phospholipid is hydrophilic?

Back

The head of the phospholipid.

Front

What type of solution causes cells to swell due to water intake?

Back

Hypotonic solution.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What is a selectively permeable membrane?

Back

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

Front

What happens to animal cells in a hypertonic solution?

Back

Animal cells will shrink as water moves out of the cell.

Front

What is the role of transport proteins in cellular transport?

Back

Transport proteins facilitate the movement of substances across the cell membrane.