Cellular Transport Honors Bio Practice

Front

What is cellular transport?

Back

The process by which substances move across cell membranes to enter or exit the cell.

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 osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What happens to a cell in a hypertonic solution?

Back

The cell will lose water and shrink.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will gain water and may swell or burst.

Front

What is the role of protein channels in cellular transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane.

Front

What is the role of protein pumps in cellular transport?

Back

Protein pumps actively transport molecules across the cell membrane against their concentration gradient.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses transport proteins to move molecules across the membrane.

Front

What is the lipid bilayer?

Back

A double layer of phospholipids that makes up the cell membrane.

Front

What are phospholipids?

Back

Molecules that form the basic structure of the cell membrane, consisting of hydrophilic heads and hydrophobic tails.