NTA Abhyas NEET2020ChemistryBiomoleculesPractice
Which of these is false about enzymes?
Options
- ANucleic acids which behave as enzymes are called ribozymes.
- BEnzymes only catalyse the reaction and do not initiate it.
- CAll enzymes are subjected to degradation at a temperature of more than 40°C.
- DA reaction producing 200 molecules of H 2 CO 3 increases to 600,000 molecules in the presence of carbonic anhy
Correct answer
C. All enzymes are subjected to degradation at a temperature of more than 40°C.
Step-by-step solution
Inorganic catalysts work efficiently at high temperatures and high pressures, while enzymes get damaged at high temperatures (say above 40°C). However, enzymes isolated from organisms who normally live under extremely high temperatures (e.g., hot vents and sulphur springs), are stable and retain their catalytic power even at high temperatures (upto 80°-90°C). Thermal stability is thus an important quality of such enzymes isolated from thermophilic organisms.