Cell Transport Flashcard

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows particles too large to pass through the membrane to move across with the help of channel proteins, without the use of energy.

Front

What is a solute in a solution?

Back

A solute is a substance that is dissolved in a solvent to form a solution. For example, in a saltwater solution, salt is the solute.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the need for energy (ATP). It occurs naturally due to concentration gradients.

Front

Does passive transport require energy?

Back

No, passive transport does not require energy; it relies on the natural movement of molecules.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them in a membrane. It moves molecules into the cell, not out.

Front

Is endocytosis responsible for moving molecules out of the cell?

Back

False. Endocytosis moves molecules into the cell, while exocytosis is responsible for moving molecules out.

Front

What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy (ATP) to do so.

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved (e.g., salt), while a solvent is the substance that does the dissolving (e.g., water).

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the role of channel proteins in facilitated diffusion?

Back

Channel proteins provide a pathway for specific molecules to pass through the cell membrane during facilitated diffusion.