Cell Transport Review

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What type of transport requires energy?

Back

Active transport requires energy to move molecules against their concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which molecules pass through the cell membrane via special proteins, without the use of energy.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water leaves the cell, causing it to shrink, a process known as plasmolysis.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell and potentially swell it.

Front

What is an isotonic solution?

Back

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

Front

What type of molecules can easily pass through the phospholipid bilayer?

Back

Small, non-polar molecules can easily pass through the phospholipid bilayer due to their size and lack of charge.

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 cytolysis?

Back

Cytolysis is the bursting of a cell due to excessive water intake, often occurring in a hypotonic environment.

Front

What is the role of transport proteins?

Back

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