Cofactor

That should be NAD H as a required cofactor for the reduction. NAD would be used for the reverse reaction (ethanol oxidation to acetaldehyde).

See entire post

... polymerases and other enzyme but was found lacking pol 111.An enzyme of unknown function necessary for DNA replication that required NADPH as a cofactor was isolated from the organism.Devise a scheme of DNA replication which is consistent with these observation.Basically we can not use DNA as ...

See entire post

What is the difference between cofactor and coenzyme? What is the difference between transketolase and transaldolase?

See entire post

... conditions the pyruvate formed during glycolysis can be converted to lactic acid by an enzyme called lactic acid dehydrogenase. NADH is a cofactor for this enzyme (and a host of other dehydrogenase/oxidase enzymes) and is the source of electrons that reduces pyruvate to lactate regenerating ...

See entire post

... Generally calcium is used by cells as a second messenger, with an informational role. Magnesium, on the other hand, is generally used as a cofactor for some enzymes.

See entire post