Final answer:
NAD is not one of the electron carriers found in the electron transport chain. Iron-sulfur proteins, flavoproteins, ubiquinone, and cytochromes are the electron carriers involved in the electron transport chain.
Step-by-step explanation:
The types of electron carriers found in the electron transport chain do NOT include NAD (Nicotinamide adenine dinucleotide). The electron transport chain consists of several components, including iron-sulfur proteins, flavoproteins, ubiquinone, and cytochromes. These electron carriers play crucial roles in transporting electrons and protons to generate ATP during cellular respiration. NAD, on the other hand, is involved in the initial stages of cellular respiration as a primary electron acceptor but is not part of the electron transport chain.