In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Q: Question: If, by adding a drop of H2O2 to a bacterial suspension, bubbles (O2) are generated, the bacteria produce: 
 Options:  <1> Cytochrome C oxidase. <2> Oxygenase <3> Superoxide dismutase. <4> Catalase <5> Anhydrase

A: 4
****
Q: Question: In a determination of the activity of an enzyme, the depletion of the substrate: 
 Options:  <1> It is essential for most trials. <2> It may give falsely low results in sera with high enzymatic activity. <3> It occurs when the reagent is finished. <4> It occurs due to a defect in the spectrophotometer. <5> It can lead to falsely elevated results in sera with high enzymatic activity.

A: 2
****
Q: Question: The activation of arterial baroreceptors causes: 
 Options:  <1> Stimulation of the bulbar pressure center. <2> Activation of the parasympathetic. <3> Increased blood pressure. <4> Tachycardia. <5> Positive inotropic effect.

A:
2
****