An electron carrier that is used in harvesting energy from glucose molecules in a series of gradual steps in the cytoplasm is Naim 10:26 Cell Energetics and Division An electron carrier that is used in harvesting energy from glucose molecules in a series of gradual steps in the cytoplasm is A. pyruvate. B. cyclic AMP. C. ATP. D. NAD+. E. NADH. Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+