What are NADH and FADH2? a. Oxidized coenzymes which carry electrons b. energy-producing organelles c. short-term, socially popular sources of hydrogen gas d. Reduced coenzymes which carry electrons
What are NADH and FADH2?
| a. |
Oxidized coenzymes which carry electrons |
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| b. |
energy-producing organelles |
|
| c. |
short-term, socially popular sources of hydrogen gas |
|
| d. |
Reduced coenzymes which carry electrons |
NADH or the nicotinamide dinucleotide is present in most of the cells. It has two nucleotides joined together via phosphate groups with one containing adenine and another containing nicotinamide.
FADH2 or flavin adenine dinucleotide is another component present in cells and takes part in most of the biological reactions. It contains flavoproteins that has flavin group.
NADH can exist in two forms, NAD+ and NADH. NAD+ is the oxidized state whereas NADH is the reduced state. NADH acts as the reducing agent that is capable of donating electrons in many reactions. NAD+ is the oxidized state and is capable of accepting electrons in a redox reaction. The two forms of NADH enhances the enzymatic action and thus is referred to as a coenzyme.
FADH2 also exists in two forms, FAD and FADH2. The FAD state is the oxidized state that is capable of accepting 2 protons and 2 electrons in a reaction and attains FADH2 state. The FADH2 state is the reduced state that is capable of donating electrons in a redox reaction. It is also involved in enhancing the enzymatic function and thus is referred to as a coenzyme.
Therefore, both NADH and FADH2 are the reduced coenzymes that carry electrons.
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