What is active transport GCSE?
Substances are transported passively down concentration gradients. Often, substances have to be moved from a low to a high concentration – against a concentration gradient. Active transport is a process that is required to move molecules against a concentration gradient. The process requires energy.
What is the process of active transport?
Active transport is the process of moving molecules across a cellular membrane through the use of cellular energy. Active transport involves molecules moving against a gradient or other form of resistance, such as from an area of lower to higher charge.
What is active transport in English?
active transport in American English noun. the movement of ions or molecules across a cellular membrane from a lower to a higher concentration, requiring the consumption of energy.
What is active transport GCSE AQA?
Active transport The net movement of particles from an area of low concentration to an area of higher concentration using energy.
What are the key features of active transport?
Active transport systems are characterized by (1) movement of solutes against a concentration or electrochemical gradient, (2) saturation at high solute concentration, (3) specificity for structural and/or chemical features of the solute, (4) competitive inhibition by molecules transported by the same transporter, and …
What is active transport class 9th?
In cellular biology, active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement.
What is meant by active transport Class 9?
Active transport is a mode of transportation in plants, which uses stored energy to move the particles against the concentration gradient. This mode of transportation in plants is carried out by membrane proteins and transports the substance from the lower concentration to higher concentration.