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'.
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Question: Question: Indicate which of the following deficits leads to a porphyria: 
 Options:  <1> Phenylalanine hydroxylase. <2> 21 α-hydroxylase. <3> Ferrochelatase <4> Glucokinase. <5> Tyrosine hydroxylase.

Answer: 3


Question: Question: One of the signs that can appear in the postoperative period is tympanism, which means: 
 Options:  <1> Paralysis of intestinal peristalsis. <2> Tympanic perforation due to increased pressure. <3> Evisceration <4> Retention of gases in the intestine. <5> Severe abdominal pain.

Answer: 4


Question: Question: Immunoglobulin isotype change affects: 
 Options:  <1> The constant regions of the heavy chains. <2> The constant regions of the light chains. <3> The totality of heavy chains. <4> The entire immunoglobulin molecule. <5> The hypervariable regions of the heavy chains.

Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
1


