Question

Active transport of solute in plant refers to flow of solutes against a concentration gradient and therefore requires input of energy. This energy is derived

• A. Always from hydrolysis of ATP
• B. Not only from ATP hydrolysis but also from the collapse of a proton motive force
• C. 25% form the input from ATP hydroysis and 75% from the collapse of a proton motive force
• D. From the different source depending on the solutes

Answer 1

The correct option is B Not only from ATP hydrolysis but also from the collapse of a proton motive force

B. Not only from ATP hydrolysis but also from the collapse of a proton motive force

Solution : The energy for the movement of molecules against the concentration gradient is mediated by ATP hydrolysis and also from the collapse of proton motive force that is generated due to the transport of electrons in the electron carriers and the increased concentration of the protons on one side of the membrane.

So the correct answer is " Not only from ATP hydrolysis but also from the collapse of a proton motive force."