Question

19, Which of the following is true? Enrymes force reactions to proceed in only one direction. A) Enrymes alter the equilibrium of the reaction. Enzymes alter the standard free energy of the reaction. All of the answers are correct. None of the answers is correct B) C) D) E) 20). When substrate concentration is much greater than K, the rate of catalysis is almost equal to A) K B) /K C) Vea D) All of the answers are correct. E) None of the answers is correct. 21) When the kat/KM ratio is at its upper limit, it is referred to as Circe limits Michaelis rate. A) B) C) D) E) perfect enzyme. All of the answers are correct. None of the answers is correct 22) What type(s) of inhibition can be overcome by increased substrate concentration? competitive A) B) noncompetitive uncompetitive All of the answers are correct. None of the answers is correct. C) D) E)

Answer 1

Ans 19)

Enzymes – Enzymes are catalysts found in living organisms and they speeds up the biochemical reactions occurring in the body of living organisms.

They work by lowering the activation energy of the reaction. They react with the substrate to form a transition state that needs less energy to complete the reaction.

Enzymes work without -

• Altering the equilibrium of the reaction.
• Altering the standard free energy of the reaction.

Also enzymes can catalyze the reaction in both the direction since they also reduce the energy barrier but do not affect the equilibrium position.

Hence, they also affect the speed of the reaction

Therefore, the correct option is –

E) None of the answers are correct.