The Electron Transport Chains (ETCs)in the Chloroplasts and the Mitochondria

Multiple Choice

The electron transport chains (ETCs) in the chloroplasts and the mitochondria gradually lower the energy content of an electron as it passes from carrier to carrier.This process is similar to the reduction in the energy content of a

A) cannonball that reaches the high point of its flight and then returns to the ground.
B) bowling ball bouncing down a flight of stairs and landing temporarily on each step.
C) pair of sunglasses that intercepts ultraviolet radiation before it reaches our eyes.
D) newly baked pie cooling on the counter before it can be cut and eaten.