cell membrane transport

Front

Movement of materials from high to low concentration through a protein channel.

Back

Passive Transport: A process that does not require energy to move substances across a cell membrane.

Front

What is the hydrophilic portion of the cell membrane?

Back

The hydrophilic portion of the cell membrane refers to the phosphate heads of phospholipids that are attracted to water.

Front

What type of solution is a cell in when it has the same concentration of solutes as its surroundings?

Back

Isotonic: A solution where 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 molecules move against their concentration gradient?

Back

Active Transport: The movement of molecules from an area of low concentration to an area of high concentration, requiring energy.

Front

What is facilitated diffusion?

Back

Facilitated Diffusion: A type of passive transport that uses protein channels to help move substances across the cell membrane.

Front

What is osmosis?

Back

Osmosis: The diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the role of protein channels in cell membrane transport?

Back

Protein Channels: They facilitate the movement of specific molecules across the cell membrane, especially those that cannot pass through the lipid bilayer.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is the difference between passive and active transport?

Back

Passive Transport does not require energy, while Active Transport requires energy to move substances against their concentration gradient.