What is the key difference between a growth medium and a substrate in biological contexts like hydroponics?

Answer

The medium provides the general nutritional broth, while the substrate is the specific surface or molecule being metabolized/acted upon.

A growth medium provides the general nutritional broth for an organism or reaction, but the substrate is the specific molecule being metabolized or the physical surface upon which an action is localized.

What is the key difference between a growth medium and a substrate in biological contexts like hydroponics?
BasesubstrateMaterialreactionenzyme