This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which of the following leads to an increase in enzyme activity - 
Select and explain. 
A. Increase in temperature, B. Decrease in activation energy, C. Extremes of pH value, D. Low substrate concentration
B: Decrease in activation energy
Answer: B: Decrease in activation energy 
Explanation: Answer-B. -Decrease in activation energyThe enzymes speed up chemical reactions by lowering the magnitude of the activation energy banier, i.e.,free energy of Activation