Test - Cell Transport

Front

What is osmosis?

Back

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane.

Front

What does selectively-permeable mean?

Back

Selectively-permeable means that a membrane allows certain substances to enter and leave the cell while blocking others.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy.

Front

What does 'high concentration area' mean?

Back

A high concentration area refers to a space where particles are tightly packed together.

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 an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is the same 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 outside the cell, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes outside the cell, causing water to move into the cell.

Front

What role do proteins play in cell transport?

Back

Proteins can act as channels or carriers to help transport substances across the cell membrane.