Describe the role played by protein pumps during active transport in plants.
Mode of transportation in plants in which stored energy is used to move the particles against the concentration gradient i.e. from region of lower concentration to region of higher concentration is known as active transport. This process of active transport involves specific protein pumpsProtein pumps are used to transport substances against the concentration gradient. Each protein pump is very specific in what substance it carries across the membrane. Protein pumps are special type of proteins also called as trans-membrane proteins.Using energy derived from ATP, these specific proteins forms complex with substance to be transported across the membrane.Transport rate reaches maximum when all protein transporters are being used or are saturatedUpon entering cytoplasm this protein-substance complex gets dissociated to liberate the substance