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STD 11 - 9. Biomolecules — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 9. Biomolecules1 Mark
MCQ
As temperature changes from $3^o \,C$ to $45^o \,C$, the rate of enzyme activity will
  • A
    Decrease and then increase
  • ✓
    Increase and then decrease
  • C
    Increase only
  • D
    Decrease only
✓

Answer

Correct option: B.
Increase and then decrease
b
(b) If temperature increases from $3^°\,C$ to $45^°\,C$, firstly it reaches to optimum condition and later temperature conditions are not optimum for enzyme activity. Thus the rate of enzyme activity initially increases and then decreases.

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