Cellular Transport (4M)

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from an area of high concentration to an area of low concentration.

Front

What is osmosis?

Back

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

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, the cell will shrink as water moves out of the cell to balance the solute concentration.

Front

What are phospholipids?

Back

Phospholipids are the main structural components of cell membranes, consisting of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.

Front

What is a hypotonic solution?

Back

A hypotonic solution is one that has a lower concentration of solute compared to the inside of the cell, causing the cell to swell as water enters.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane against their concentration gradient, requiring energy (usually in the form of ATP) and often involving transport proteins.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane without energy.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of any molecules from high to low concentration, while osmosis specifically refers to the movement of water molecules.

Front

What is an isotonic solution?

Back

An isotonic solution has the same concentration of solute as the inside of the cell, resulting in no net movement of water and the cell maintaining its size.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their external environment, bringing them into the cell in vesicles.