active transport

• active transport recquires energy and a carrier protein.
• is the movement against the concentration gradient.
• active transport involves the net movement of molecules against their concentration gradient. This requires energy, which is provided by the mitochondria
• carrier protein is the kind of protein required for active transport
• involves using energy to move substances from a low concentration to high concentration
• opposite way round to diffusion and osmosi
• carrier protein is recquired
• passive transport-substances move down the concentration gradient
• active transport-substances move against the concentration gradient