Which of the following brain areas serves as the major control center of the autonomic nervous system and endocrine system? The most important organ in our body is our brain?   But the most important is, in my opinion, the brain! Without the brain we wouldn't have touch, sight, or smell.
Updated June 12, 2014. Definition: A substrate is the medium in which a chemical reaction takes place or the reagent in a reaction that provides a surface for absorption. In biochemistry, an enzyme substrate is the substance the enzyme acts upon. Sometimes the word substrate is also used as a synonym for the reactant, which is the molecule consumed in a chemical reaction. Substrate (biology): In biology, the substrate may be the surface on which an organism grows or is attached. For example, a microbiological medium may be considered a substrate. The substrate may also be the material at the bottom of a habitat, such as gravel at the base of an aquarium. Substrate may also refer to the surface on which an organism moves. Substrate (materials science): In this context, a substrate is a base on which a process occurs. For example, if gold is electroplated over silver, the silver is the substrate. Substrate (geology): In geology, substrate is underlying stratum.
Definition of Substrates. Search the Dictionary. (1) A chemical species of particular interest, the reaction of which with some other chemical reagent is under observation (e.g. a compound that is transformed under the influence of a catalyst).