what kind of reaction happens to convert NAD+ into NADH. Reduction or Oxidation? Why?

Answer 1

NADH is produced in organisms in glycolysis and the Krebs cycle (TCA) cycle. Formation of NAD+ to NADH is reduction. NADH is produced to create reduction power for the cell. Some of the reduction power is used in cellular synthesis reactions, but most of the reducing power is brought to the electron transport chain where it is manipulated to create alot of energy in the form of ATP. Most of the energy created in eukaryotic cells (human, plant, algal, and fungal cells) is created using hte reduction power from NADH to create ATP at the mitochondria.

Answer 2

This is a reduction reaction, because the final product is a neutral molecule. The term reduction applies for the reduction of the superficial molecualr final charge, wich is cero in the end, because the Hydrogen atom adds an electron to complete the electroneutrality.

Answer 3

Conversion of NAD+ + NADH+H+ is an ex of reduction

Answer 4

I'm not familiar with NAD+ or NADH.
But shana a's blanket statement that combining with hydrogen involves reduction is not true.
And I think that hydrogen probably acts as an oxidizing agent in forming NADH.

Example of hydrogen as an oxidizing agent:
Use Na+ (sodium ions) to make NaH (sodium hydride), and you are oxidizing the sodium. Reason: Sodium is a much stronger reducing agent than hydrogen, so it reduces the hydrogen, and the hydrogen oxidizes the sodium.

Answer 5

If you add Hydrogen Then Reduction
Add Oxygen - Oxidation