NADH

Definition

NADH is a coenzyme that plays a crucial role in energy production within cells by transporting electrons during cellular respiration. It is the reduced form of NAD+ (nicotinamide adenine dinucleotide).

5 Must Know Facts For Your Next Test

1. NADH is produced during glycolysis and the Krebs cycle.
2. It carries electrons to the electron transport chain in mitochondria.
3. NADH generates ATP through oxidative phosphorylation.
4. In photosynthesis, NADPH, not NADH, is primarily involved in the light-dependent reactions.
5. The ratio of NAD+/NADH is important for maintaining cellular redox balance.

Review Questions

• What is the main function of NADH in cellular respiration?
• During which metabolic processes is NADH produced?
• How does NADH contribute to ATP synthesis?

Related terms

NAD+:

The oxidized form of NADH that acts as an electron acceptor.

ATP:

Adenosine triphosphate, the primary energy carrier in cells.

Electron Transport Chain:

A series of protein complexes that transfer electrons to generate ATP.