The electron transport chain (etc) is one part in oxidative phosphorylation, which is the last step in cellular respiration.
which of the following is true of the etc?
choose 1

a. the movement of electrons down the etc drives the formation of a proton gradient.

b. the movement of h+ ions across the inner membrane of the mitochondria drives the transfer of electrons down the etc.

c. the movement of h+ ions through atp synthase drives the transfer of electrons down the etc.

d. the movement of electrons down the etc drives the movement of adp and phosphate through atp synthase.

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.