Active and Passive Transport

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 facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses special transport proteins to help molecules, like glucose, enter the cell without using energy.

Front

How does active transport differ from passive transport?

Back

Active transport requires energy to move molecules against their concentration gradient, from low to high concentration.

Front

What is endocytosis?

Back

Endocytosis is a process by which cells engulf substances from the outside environment, bringing them into the cell.

Front

What happens to a blood cell in salt water?

Back

A blood cell placed in salt water will lose water and shrink due to osmosis.

Front

What is osmosis?

Back

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

Front

What is passive transport?

Back

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

Front

What is the role of transport proteins in facilitated diffusion?

Back

Transport proteins assist in the movement of specific molecules across the cell membrane, allowing them to enter or exit the cell without energy.

Front

What is hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing the cell to lose water and shrink.

Front

What is hypotonic solution?

Back

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