In biochemistry, a substrate is a molecule upon which an enzyme acts. Enzymes catalyze chemical reactions involving the substrate(s). The substrate binds with the enzyme's active site, and an enzyme-substrate-complex is formed. The substrate is broken down into a product and is released from the active site. The active site is now free to accept another substrate molecule. An example of a substrate would be milk and the enzyme added would be rennin which causes milk to set. Another example would be the reaction of catalase in the decomposition of hydrogen peroxide which is: Look up substrate in Wiktionary, the free dictionary. ... Biochemistry is the study of the chemical processes and transformations in living organisms. ... In chemistry, a molecule is an aggregate of two or more atoms in a definite arrangement held together by chemical bonds [1] [2] [3] [4] [5]. Chemical substances are not infinitely divisible into smaller fractions of the same substance: a molecule is generally considered the smallest particle of a pure... Ribbon diagram of the enzyme TIM, surrounded by the space-filling model of the protein. ... In chemistry and biology, catalysis (in Greek meaning to annul) is the acceleration of the rate of a chemical reaction by means of a substance, called a catalyst, that is itself unchanged chemically by the overall reaction. ... Chemical reactions are also known as chemical changes. ... The active site of an enzyme is the binding site where catalysis occurs. ... Ribbon diagram of the enzyme TIM, surrounded by the space-filling model of the protein. ... Rennet, also called rennin or chymosin (EC 3. ... Catalase (human erythrocyte catalase: PDB 1DGF, EC 1. ... Rotting fruit Decomposition (or spoilage) is a phenomenon common in the sciences of biology and chemistry. ... Hydrogen peroxide (H2O2) is a very pale blue liquid which appears colourless in a dilute solution, slightly more viscous than water. ...

2 H₂O₂ → 2 H₂O + O₂.

A general equation is as follows:

E + S ⇌ ES → EP ⇌ E + P

where E = enzyme, S = substrate(s), P = product(s) Note that only the middle step is irreversible.

The reaction follows Michaelis-Menten kinetics. Michaelis-Menten kinetics describes the kinetics of many enzymes. ...