Vitamins are commonly called

Which of the following is $Coenzyme-II$?

$NAD$ and $NADP$ possess which vitamin?

Which of the following are commonly found as co-factors in humans?

If organic compounds are loosely bound to the apoenzyme,what are they called?

Assertion : $A$ co-enzyme or metal ion that is very tightly bound to enzyme protein is called a prosthetic group.
Reason : $A$ complete,catalytically active enzyme together with its bound prosthetic group is called an apoenzyme.