Calculate the specific activity when 500 mg of protein has an activity of 18,000 units.
A) 0.28 units/mg protein
B) 36 units/mg protein
C) 9000 units/mg protein
D) 13,000 units/mg protein

Question

Quizplus · Accepted Answer

Specific activity is defined as the amount of activity per unit of protein. 
Specific activity = Activity in units / amount of protein in mg
Therefore, Specific activity = 18,000 units / 500 mg = 36 units/mg protein. 
Hence, option C is the correct answer.

Calculate the Specific Activity When 500 Mg of Protein Has