In biology:
* The reactant(s) upon which an enzyme acts: In this context, the substrate is the molecule that the enzyme binds to and transforms into a product. For example, in the breakdown of glucose, glucose is the substrate for the enzyme hexokinase.
* The surface on which an organism lives: In this context, the substrate refers to the material that an organism is attached to or grows on. For example, a tree trunk is a substrate for fungi and lichens.
In chemistry:
* A substance that is present in a chemical reaction: In this context, the substrate can be a reactant, product, or catalyst.
In other contexts:
* A layer or foundation upon which something is built or supported: For example, a concrete slab is a substrate for a building.
* The underlying material or structure of something: For example, the substrate of a soil is the rock or mineral material from which it is formed.
To understand the meaning of "substrates" in a specific context, consider the surrounding information and try to determine the intended meaning.
