TASK DEFINITION: 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'.
PROBLEM: Question: The pyruvate carboxylase activity depends on the positive allosteric effector:
Options: <1> Succinate <2> AMP. <3> Isocitrate. <4> Citrate. <5> Acetyl CoA

SOLUTION: 5

PROBLEM: Question: Epidemiology allows early detection of changes in the incidence of a certain disease in the population. For this, the most correct thing is to use:
Options: <1> The etiological investigation. <2> The description of the natural history of the disease. <3> Epidemiological surveillance. <4> The evaluation of the functioning of the services. <5> None of the previous answers is correct.

SOLUTION: 3

PROBLEM: Question: A mixture of iron (III) chloride and potassium hexacyanoferrate (III) (potassium ferricyanide) is used to detect extremely small amounts of hydrogen peroxide in the water. The presence of H2O2 causes, after a short time, an intense dark blue color. This is because hydrogen peroxide:
Options: <1> It reduces hexacyanoferrate (III) to hexacyanoferrate (II). <2> Oxide to hexacyanoferrate (III). <3> Oxide to iron (III) chloride. <4> Peroxo-cyano form complexes of Fe (III). <5> Oxidize cyanocomplexes to complex cyanate.

SOLUTION:
1