Electrons move through the electron transport chain from a higher to lower energy state. Energy release moves protons through channels in the membrane proteins, moving them into the inner membrane space. This leads to a buildup of positively charged protons, which creates an electrical potential across the membrane.
- https://www.google.com/amp/s/www.news-medical.net/amp/life-sciences/What-is-the-Electron-Transport-Chain.aspx
The process whereby organisms better adapted in to their environment tend to survive and produce more offspring.
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D. To convert sound waves into mechanical waves.
B. Excite electrons
Explanation because it absorbs The quanta of energy the photon would transfer and move to a higher energy state