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: Except in patients whose chronic renal failure is due to diabetic nephropathy or tubulointerstitial nephropathy, the arterial blood gas pattern that you would expect to find in a patient with chronic renal failure would be: 
 Options:  <1> pH 7.30, HCO3 18 mEq / L, Cl 116 mg / dL, because metabolic acidosis with normal anion gap is characteristic. <2> pH 7.46, HCO3 18 mEq / L, Cl 116 mg / dL, because hyperchloremic metabolic alkalosis is characteristic. <3> pH 7.456, HCO3 18 mEq / L, Cl 100 mg / dL, because metabolic acidosis with increased anion gap is characteristic. <4> pH 7.46, HCO3 30 mEq / L, Cl 90 mg / dL, because metabolic alkalosis with normal anion gap is characteristic. <5> pH 7.45, HCO3 23 mEq / L, Cl 100 mg / dL, because metabolic alkalosis with normal anion gap is characteristic.

A: 3
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Q: Question: Why is chlorophyll green ?: 
 Options:  <1> Absorbs all wavelengths of the visible spectrum. <2> Absorbs wavelengths only from the red and ultra-red parts of the spectrum (680nm, 700nm). <3> Absorbs wavelengths in the red and blue parts of the visible spectrum. <4> Absorbs wavelengths only from the blue part of the visible spectrum. <5> Absorbs in the near ultraviolet.

A: 3
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Q: Question: In the path that leads in the liver to acetoacetate biosynthesis from acetyl CoA, which of the following substances is the immediate precursor of acetoacetate? 
 Options:  <1> 3-Hydroxybutyrate <2> Acetoacetyl CoA. <3> 3-Hydroxybutyrate CoA. <4> Mevalonic acid. <5> 3-Hydroxy-3-methylglutaryl. CoA.

A:
5
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