Which statement best describes the connection between the proton gradient and the transfer of electrons through the electron transport chain? The proton gradient is generated by water moving along the electron transport chain.
The proton gradient is generated by protons moving along the electron transport chain.
The proton gradient is generated by proton pumping into the intermembrane space using the energy from the transfer of electrons.
The proton gradient is generated by electron pumping into the intermembrane using the energy from the transfer of electrons.

C. The proton gradient is generated by proton pumping into the intermembrane space using the energy from the transfer of electrons.

Explanation:

I got it right on Edg

c. live where it’s cold and icy

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.