Question

Which statement about enzymes is not correct?
A.Enzymes are in colloidal state
B.Enzymes are catalysts
C.Enzymes can catalyze any reaction
D.Urease is an enzyme

Answer 1

Hint: Enzymes are basically proteins made from amino acids. These are pivotal in all living entities which govern all the biological processes. Moreover, the majority of enzymes are proteins with catalytic capabilities crucial to perform different processes.

Complete step by step answer:

Basically, Enzymes are biological polymers that catalyze biochemical reactions. The metabolic processes and other chemical reactions in the cell are carried out by a set of enzymes that are necessary to sustain life. They are a linear chain of amino acids which further give rise to a three-dimensional structure. Now, to catalyze the reaction, an enzyme will bind to one or more reactant molecules known as enzyme substrates and further these substrates come together to create one large molecule. The mechanism is as shown:

Now, enzymes are in a colloidal state. They are shape selective and further catalyze a specific reaction in which they are suitable. But they cannot catalyze any reaction. Like all catalysts, they increase the reaction rate by lowering its activation energy. So, on the basis of word done at the molecular level, they are classified into six different types:
1.Hydrolases
2.Oxidoreductases
3.Transferases
4.Isomerases
5.Ligases
6.Lyases
One common example of enzyme is Urease. This enzyme catalyzes the hydrolysis of urea to ammonia and carbon dioxide. Therefore, we have seen that all the options are correct except option C.

Hence, option C is correct.

Note: There are approximately 1300 different types of enzymes found in the human body. Some of the digestive enzymes are pepsin, amylase, trypsin, pancreatic lipase, Ribonuclease and many more. These enzymes further help to break down proteins, large starch molecules and fats in the different parts of the human body.