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'.

Question: Question linked to image # 4 What would be the most likely radiological diagnosis to justify this finding? 
 Options:  <1> Central bronchogenic carcinoma. <2> Left phrenic paralysis. <3> Anterior thoracic wall abscess. <4> Left pleural mesothelioma. <5> Anterior mediastinal lymphoma.
1

Question: If a sample of size 100 has a standard deviation of 10, its typical error is: 
 Options:  <1> 10 <2> 100 <3> 0.1 <4> one. <5> There is not enough data to calculate it.
4

Question: Pyruvate dehydrogenase (PDH): 
 Options:  <1> It catalyzes the reversible transformation of pyruvate into acetyl-CoA and vice versa. <2> It catalyzes the irreversible carboxylation of pyruvate into citrate, and with it, its entry into the citric acid cycle. <3> It connects the degradation of carbohydrates, with the synthesis of acetyl-CoA and its entry into the citric acid cycle. <4> It allows the use of acetyl-CoA derived from the degradation of fatty acids for the synthesis of glucose. <5> It is activated in the presence of high concentrations of acetyl-CoA and NADH + H +.

3