Which of these statements is not true about coenzyme and prosthetic group?

Both are required for enzyme action

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both are separated from enzymes

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both are organic compounds

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both are not polypeptides

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Both are separated from enzymes
The cofactor is a non-protein part of the enzyme. It can be metal ions or the organic chemical. The cofactors which are organic chemicals are known as a coenzyme. These are loosely attached to the apoenzyme. The tightly bound coenzymes are the prosthetic group. For example, a heme group is a prosthetic group consisting of a protoporphyrin ring and a central iron. A conjugated protein combined with its specific prosthetic group is termed a holoprotein.
Coenzyme and prosthetic group both are required for the enzyme action. These are organic compounds and they are not considered as polypeptides.
So, the correct answer is option B

Suggest Corrections

Similar questions

Q. Assertion (A) : Coenzymes serve as cofactors in a number of different enzyme catalyzed reactions
Reaction (R) : Coenzymes and prosthetic groups are cofactors

Q. Complete the following passage(s) with an appropriate word/term to be filled in the blank spaces.
Apoenenzyme, Polypeptide, Prosthetic, Co-enzyme, Cofactors
Enzymes are composed of one or several .......... (1) ........ chains. However, there are a number of cases in which non-protein constituents called ........(2)........ are bound to the the enzyme to make the enzyme catalytically active. In these instances, the protein portion of the enzymes is called the ..........(3)......... Three kinds of cofactors may be identified prosthetic groups, co-enzymes and metal ions. ..........(4).......... groups are organic compounds and are distinguished from other cofactors in that they are tightly bound to the apoenzyme. For example, in peroxidase and catalase, which catalyze the breakdown of hydrogen peroxide to water and oxygen, haem is the prosthetic group and it is a part of the active site of the enzyme. .......(5)......... are also organic compounds but their association with the apoenzyme is only transient, usually occurring during the course of catalysis, Furthermore co-enzymes serve as co-factors in a number of different enzyme catalyzed reactions. The essential chemical components of many coenzymes are vitamins, e.g., coenzyme nicotinamide adenine dinucleotide (NAD) and NADP contain the vitamin niacin.

Q. Assertion :Coenzymes serve as co-factors in a number of different enzyme catalyzed reactions. Reason: Coenzymes and prosthetic groups are cofactors.

Consider the following statements A–D with certain blanks. Find the option which correctly fills up these blanks.
A. The protein portion of enzyme is called --------(i)
B. Prosthetic groups are-------------- (ii) bound to the protein part of enzyme.
C--------- (iii) is the prosthetic group of enzyme catalase.
D----------(iv) are nucleic acids with catalytic power.

Join BYJU'S Learning Program