Cell Transport & Homeostasis Review

Front

What happens to a cell in an isotonic solution?

Back

The cell stays the same size.

Front

Which type of solution causes a cell to swell?

Back

Hypotonic solution.

Front

What is required for all forms of active transport?

Back

Active transport requires energy.

Front

How does oxygen move from the lungs into red blood cells?

Back

Oxygen moves by simple diffusion.

Front

What is the process called when sodium is pumped out of a nerve cell against its concentration gradient?

Back

Active transport.

Front

What is osmosis?

Back

Osmosis is the movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

Define facilitated diffusion.

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances down their concentration gradient.

Front

What occurs in a hypertonic solution?

Back

In a hypertonic solution, a cell will shrink as water moves out of the cell.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy needed to pump substances against their concentration gradient.