The proton pump see concept 36.2 (page 786) the proton pump see concept 36.2 (page 786) uses the energy stored in atp to produce a hydrogen ion gradient across membranes. uses the energy of a proton gradient to generate atp is a passive process operates by osmosis releases kinetic energy

uses the energy stored in atp to produce a hydrogen ion gradient across membranes

The proton pump is a membrane protein that could actively able to moves H+. This action will need energy since the movement is against the gradient of concentration. Like all other pumps, the energy source would be ATP. Proton pump has a role in acid secretion in human.

10.063g / 10.00 ml = 1.0063 g/ml which rounds off to 4 sig figs as: 1.006 g/ml