Unit 3: Cells - Honors Pulse Check #2 - 24

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is cellular transport?

Back

Cellular transport refers to the processes by which substances move in and out of cells, including passive and active transport.

Front

What happens to water in a hypotonic solution?

Back

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

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is a phospholipid?

Back

A phospholipid is a molecule that makes up the cell membrane, consisting of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.

Front

What does hydrophilic mean?

Back

Hydrophilic means 'water-loving'; it describes substances that can interact with or dissolve in water.

Front

What does hydrophobic mean?

Back

Hydrophobic means 'water-fearing'; it describes substances that do not interact with or dissolve in water.

Front

What is an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell.