MHT CET 202621 AprilMorning Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 21 April
- Shift
- Morning Shift
- Subject
- Biology
- Chapter
- Biomolecules (B)
MHT CET 2026 · 21 April · Morning Shift · Biology · Biomolecules (B)
Which of the following statements is incorrect about enzyme...
Which of the following statements is incorrect about enzyme substrate complex ?
Options
- AThe substrate induces the enzyme to alter its shape.
- BThe substrate is completely bound to the enzyme.
- CIt breaks the chemical bonds of the substrate.
- DThe shape of an enzyme changes permanently after the formation of the enzyme-substrate complex.
Correct answer
D. The shape of an enzyme changes permanently after the formation of the enzyme-substrate complex.
Step-by-step solution
Enzymes act as biocatalysts and are not consumed or permanently altered during a chemical reaction.
When a substrate binds to the active site of an enzyme, it induces a temporary change in the enzyme's shape to fit more tightly around the substrate (induced fit model).
The enzyme-substrate complex facilitates the breaking and forming of chemical bonds to convert the substrate into products.
Once the products are formed and released, the enzyme returns to its original shape and is ready to bind with another substrate molecule. Therefore, the shape of an enzyme does not change permanently.
Answer: The shape of an enzyme changes permanently after the formation of the enzyme-substrate complex.
When a substrate binds to the active site of an enzyme, it induces a temporary change in the enzyme's shape to fit more tightly around the substrate (induced fit model).
The enzyme-substrate complex facilitates the breaking and forming of chemical bonds to convert the substrate into products.
Once the products are formed and released, the enzyme returns to its original shape and is ready to bind with another substrate molecule. Therefore, the shape of an enzyme does not change permanently.
Answer: The shape of an enzyme changes permanently after the formation of the enzyme-substrate complex.