Cell Transport

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 happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, the cell loses water and shrinks due to a higher concentration of solutes outside the cell.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, the cell gains water and may swell or even burst due to a lower concentration of solutes outside the cell.

Front

Define active transport.

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

Define passive transport.

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically down their concentration gradient.

Front

What is a semipermeable membrane?

Back

A semipermeable membrane is a barrier that allows certain molecules to pass through while blocking others.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semipermeable membrane from a region of low solute concentration to a region of high solute concentration.

Front

What is the role of transport proteins?

Back

Transport proteins assist in the movement of substances across a cell membrane, either passively or actively.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space.