Submit. Â· just now. Report Abuse. proton-motive force= energy that is generated by the transfer of protons or electrons across an energy-transducing membrane and that can be used for chemical, osmotic, or mechanical work.
Theyre also stupid-easy to propagate. Take some stem cuttings and pop them in water. When you see long roots, pop them into a pot. The cuttings I've taken from these plants aren't true hoya babies because cuttings are actually a clone from the mother plant. That is, they are the same age as the mother, albeit smaller.
Until these roots are developed, you should water the plants regularly with slow, deep soaks. For the first 3 weeks after planting, water your watermelon patch once or twice a week if no rain falls in your area. After the seeds have sprouted, scale back the watering to once every 10 days or so.