questions are either true or false Protons are moved across

questions are either true or false.

Protons are moved across the thylakoid membrane at several points; for example by plastoquinone (PQ) as electrons are passed through the electron transport chain and (in effect) through the splitting of water in Photosystem II during the replenishing of electrons. These protons... Are a byproduct and serve no useful purpose Are added to ADP to create ATP Re-cross the membrane by passage through an ATP-synthesizing machine Represent another form of \'energy\' because of the resulting difference in their concentrations on either side of a membrane (chemical gradient)

Solution

1. False, protons creates electrochemical gradient as a result of the redox reactions.

2. False.

3. True.

4. True, because In chloroplasts, light drives the conversion of water to oxygen and NADP⁺ to NADPH with transfer of H⁺ ions across chloroplast membranes.