Select all correct statements about enzymes.

AEach enzyme is highly specific for a particular substrate or type of reaction.
BThe activity of an enzyme is independent of pH.
CHeating well above the optimum temperature denatures an enzyme and destroys its activity.
DAn enzyme shifts the equilibrium of a reaction towards the products.

Answer: A, C

Enzyme action is specific (lock and key) and is destroyed by denaturation at high temperature. Activity depends strongly on pH, and an enzyme cannot change the equilibrium position. So A and C are correct.

Practice Surface Chemistry More on Catalysis: homogeneous, heterogeneous, enzyme catalysis

Previous questionNext question

More questions on Catalysis: homogeneous, heterogeneous, enzyme catalysis

For an enzyme with K_m = 3.2 mM obeying v = V_max[S]/(K_m+[S]), at what substrate concentration (in mM) is v = 0.40 V_max? Give two decimals... JEE Main level
A 1.0 g sample of a metal catalyst has 1.8 x 10^19 active sites and forms 0.0150 mol of product per minute. Calculate the turnover frequency... JEE Main level
Select all correct statements about a catalyst. JEE Main level
An exothermic reaction (Delta H = -40 kJ mol^-1) has E_a = 100 kJ mol^-1 for the forward step without a catalyst. A catalyst lowers the forw... JEE Advanced level
An enzyme has K_m = 2.0 mM. In the presence of a competitive inhibitor ([I] = 3.0 mM, K_i = 1.5 mM) the apparent Michaelis constant is K_m^a... JEE Advanced level
A catalyst bed produces 8.0 mol of product per hour when fresh. After a poison blocks 70% of its active sites, the rate is proportional to t... JEE Advanced level