16.All of the following electron carriers are components of the mitochondrial electron transport chain except A. FMN B. FAD C. NAD+ D. NADP+

The correct answer is D. $NADP+$.<br /><br />The mitochondrial electron transport chain is a series of protein complexes and electron carriers located in the inner mitochondrial membrane. The main components of the mitochondrial electron transport chain are:<br /><br />A. FMN (Flavin mononucleotide) - This is the first electron carrier in the chain.<br />B. FAD (Flavin adenine dinucleotide) - This is another electron carrier in the chain.<br />C. $NAD+$ (Nicotinamide adenine dinucleotide) - This is another electron carrier in the chain.<br /><br />$NADP+$ (Nicotinamide adenine dinucleotide phosphate) is not a component of the mitochondrial electron transport chain. It is involved in other cellular processes, such as photosynthesis and the pentose phosphate pathway.