Question

Question 49 2 pts Enzymes work either by lowering the activation energy or increasing the free energy of a reaction. True False Question 50 2 pts Adding more substrate will always speed up an enzyme catalyzed reaction, but adding more enzyme will never speed up the reaction rate. True False

Answer 1

first question-:

Question 49 2 pts Enzymes work either by lowering the activation energy or increasing the free energy of a reaction. True False Question 50 2 pts Adding more substrate will always speed up an enzyme catalyzed reaction, but adding more enzyme will never speed up the reaction rate. True False

Answer is false.

they have no effect on the free energy of reaction. Enzymes work by lowering the activation energy for a reaction. This increases the reaction rate. ... Thus, the enzyme does not affect the free energy of the reaction.

Question second-:

Answer is false.

A higher substrate concentration will increase enzyme activity, but when the enzymes become saturated, there is no further increase in processing activity no matter how much substrate is present.

By increasing the enzyme concentration, the maximum reaction rate greatly increases. Conclusions: The rate of a chemical reaction increases as the substrate concentration increases. Enzymes can greatly speed up the rate of a reaction. However, enzymes become saturated when the substrate concentration is high.