The three-dimensional conformation of biomolecules is of the utmost importance in their interactions; for example, in the binding of a substrate (reactant) to the catalytic site of an enzyme (Fig. 3-8), the two molecules must fit each other closely, in a complementary fashion, for biological function.
DD&A stands for Depletion, Depreciation and Amortization. Suggest new definition. This definition appears frequently and is found in the following Acronym Finder categories: Business, finance, etc.
Life Insurance What Does AD&D Mean? Normally, AD&D is a rider attached to a life or health policy that gives benefits in case of death by accidental means or provides a set income in case of loss of certain body parts. AD&D riders are usually written so the insurer will pay double the payable amount in case of accidental death.