Neco 2025 Biology Question 38

Practice objective / multiple choice question 38 from the 2025 Neco Biology examination.

Neco 2025 Biology Objective / Multiple Choice Hard Difficulty
Question 38 NECO • 2025 • BIOLOGY • objective

An enzyme activity assay was performed at five temperatures. The recorded activities (units) were: 20°C - 15, 30°C - 30, 40°C - 45, 50°C - 30, 60°C - 15. (a) Determine the optimum temperature for the enzyme. (b) Calculate the Q10 coefficient between 30°C and 40°C using \( Q_{10}=\left(\frac{R_2}{R_1}\right)^{\frac{10}{T_2-T_1}} \). (c) Assuming the activity declines linearly from the optimum (40°C) to 50°C, estimate the activity at 45°C.

Answer Options

A. Optimum temperature = 40°C; Q10 = 1.5; activity at 45°C ≈ 35 units
B. Optimum temperature = 40°C; Q10 = 1.2; activity at 45°C ≈ 37.5 units
C. Optimum temperature = 30°C; Q10 = 1.5; activity at 45°C ≈ 37.5 units
Correct Answer D. Optimum temperature = 40°C; Q10 = 1.5; activity at 45°C ≈ 37.5 units
Correct Answer
D
Correct Option:
Optimum temperature = 40°C; Q10 = 1.5; activity at 45°C ≈ 37.5 units

About This Question

This is Neco 2025 Biology Question 38. It is one of the objective questions from the 2025 Neco Biology examination.

Difficulty level: Hard .

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