Seat belts and airbags were inserted into cars around the time of the late 1950s so the rate of death during a car accident would decrease because people are more likely to survive. And then in 1991 Side Impact Protection System (SIPS) was placed into cars again reducing fatalities during a car incident as people became more protected. :)
An electron transport chain pumps protons across a membrane while transferring electrons from one chemical to another.
I would say a hope it’s right
The answer you are looking for is Proteins. Hope this helps.