Which of the following statements regarding enzymes is true?

1.b:Enzymes increase the rate of reaction.

2.b:lowering the energy of activation of a reaction.

Explanation:

1.Enzyme : Enzymes are biological catalyst .It is defined as proteins binds to  a molecule and increase the rate of reaction.It does not change in the reaction only it increases the rate of reaction.

Enzyme does not decrease the free energy change of a reaction.Enzymes do not change in the concentration of substrate and do not prevent the changes in substrate concentration.It only increase the rate of reaction .

Therefore, option b is true.

b:Enzymes increase the rate of reaction.

2.Activation energy:It is defined that minimum energy which is required for molecules to start  the reaction .

When an enzyme catalyze a reaction then the activation energy of energy of molecules decreases and speed up the reaction.

Hence, option b is true.

Answer :b:lowering the energy of activation of a reaction.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

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