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1. The ratio of the amount of a protein present in a sample, which is used as a measure of purification, is known as

A. specific activity
B. relative activity
C. purity ratio
D. all of these

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2. If a reaction occurs in the absence of an inhibitor with rate ν₀ and in the presence of an inhibitor with rate ν_i, the degree of inhibition is defined as

A. (ν₀– ν_i)/ν₀
B. (ν₀+ ν_i)/ν₀
C. (ν₀ν_i)/ν₀
D. (ν₀-ν_i)/ν_i

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3. The rate equation in competitive inhibition based on Michaelis Menten equation is given by

A. r_maxS/(K_m (1+I/K_i)+S))
B. r_maxE/(K_m (1+I/K_i)+S))
C. r_maxI/(K_m (1+I/K_i)+S))
D. r_maxS/(K_m (1+I/K_i))

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4. Classical noncompetitive inhibition is obtained only under

A. slow equilibrium conditions
B. moderate equilibrium conditions
C. rapid equilibrium conditions
D. non-equilibrium conditions

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5. In the steady state the material balance equation for any component of a system is

A. rate of addition + rate of removal – rate of formation = 0
B. rate of addition – rate of removal + rate of formation = 0
C. rate of addition + rate of removal + rate of formation = 0
D. none of the above

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