Cellular Transport

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically from an area of high concentration to an area of low concentration.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane using energy (ATP), typically against their concentration gradient.

Front

What is osmosis?

Back

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

Front

What role does the cell membrane play in cellular transport?

Back

The cell membrane regulates what enters and exits the cell, allowing selective permeability to maintain homeostasis.

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 until equilibrium is reached.

Front

What is the function of ATP in active transport?

Back

ATP provides the energy required for active transport to move molecules against their concentration gradient.

Front

What is a semipermeable membrane?

Back

A semipermeable membrane is a barrier that allows certain substances to pass through while blocking others, crucial for processes like osmosis.

Front

What is the difference between passive and active transport?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What are channel proteins?

Back

Channel proteins are integral membrane proteins that facilitate the transport of ions and molecules across the cell membrane.