What's developed as a result of the electron transport chain? a. membrane potential b. new cells c. proton gradient d. phospholipid bilayer

C. Proton gradient

Explanation:

During electron transport chain, the electrons are comes from transport chain come from NADH and FADH₂. As electrons are travels down the chain, proton gradient develops across the inner mitochondrial membrane due to accumulation of high proton (H⁺) in the intermembrane space and a lower proton(H⁺) in the matrix. This proton gradient is used to syntheis ATP.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?