active transport
active transport
Energy-free movement of materials through a cell membrane is called passive transport. This process includes diffusion, osmosis, and facilitated diffusion, where molecules move from an area of high concentration to an area of low concentration without the input of energy.
It's called passive transport for a cell's membrane. (I checked with my science teacher)
This type of movement is called simple diffusion.
Passive transport does not use energy to pass through a cell membrane. active transport uses energy to pass through a cell membrane.
"diffusion"
A selectively permeable membrane allows water molecules to pass through but restricts the movement of larger solute particles like NaCl. In osmosis, water will move from a dilute solution to a concentrated solution through the membrane, causing a net movement of water without the movement of NaCl.
passive transport
Passive Transport
passive transport
The movement of materials across the cell membrane without using cellular energy is called passive transport. The movement of materials against a concentration difference is known as active transport. Active transport requires energy.
The three main processes involved in the entrance and exit of materials in the cell are endocytosis (cells taking in materials through vesicles), exocytosis (cells expelling materials through vesicles), and passive diffusion (movement of molecules across the cell membrane from high to low concentration without energy input).