Which enzyme catalyzes the breaking of bonds without the use of water or oxidation?

The ratio of the enzyme to substrate molecule can be as high as

Enzymes which act similarly are called as:

Which of the following statements is incorrect regarding Cytochrome $P450$?

Name the scientist who for the first time isolated and purified the enzyme urease in crystalline form from Jack bean (Canavalia ensiformis).

The $Km$ value of the enzyme is the value of the substrate concentration at which the reaction reaches to