Neco 2019 Biology Question 36

Practice objective / multiple choice question 36 from the 2019 Neco Biology examination.

Neco 2019 Biology Objective / Multiple Choice Hard Difficulty
Question 36 NECO • 2019 • BIOLOGY • objective

In a study, the activity of enzyme X was measured as the amount of product formed (µmol) in 5 min under various temperatures while the pH was kept constant at 7.0. The results were: 20°C → 12 µmol, 30°C → 20 µmol, 40°C → 28 µmol, 50°C → 30 µmol, 60°C → 22 µmol. (a) Calculate the Q10 value between 30°C and 40°C. (b) Based on the data, determine the temperature at which enzyme activity is maximal. (c) If a competitive inhibitor reduces the activity at the optimal temperature by 25%, what is the expected amount of product formed in 5 min at that temperature?

Answer Options

Correct Answer A. Q10 = 1.4; optimal temperature = 50°C; product with inhibitor = 22.5 µmol
B. Q10 = 1.5; optimal temperature = 60°C; product with inhibitor = 24 µmol
C. Q10 = 1.3; optimal temperature = 50°C; product with inhibitor = 20 µmol
D. Q10 = 1.2; optimal temperature = 40°C; product with inhibitor = 21 µmol
Correct Answer
A
Correct Option:
Q10 = 1.4; optimal temperature = 50°C; product with inhibitor = 22.5 µmol

About This Question

This is Neco 2019 Biology Question 36. It is one of the objective questions from the 2019 Neco Biology examination.

Difficulty level: Hard .

View More Neco 2019 Biology Questions More Neco Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support