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'.

[EX Q]: Question: The Aminoacyl-tRNAs: 
 Options:  <1> They are the precursors of the RANs. <2> They are enzymes that catalyze the synthesis of amino acids. <3> They are part of the ribosomes. <4> They are the tRNAs loaded with the amino acid specified by its anticodon sequence. <5> They are synthesized by RNA Polymerase II.
[EX A]: 4

[EX Q]: Question: Indicate the amino acid that, under physiological conditions, has an uncharged side chain: 
 Options:  <1> Arginine <2> Aspartic acid. <3> Glutamic acid. <4> Lysine <5> Threonine
[EX A]: 5

[EX Q]: Question: Glycogenesis: 
 Options:  <1> It is a very active pathway in all tissues. <2> It is activated by insulin. <3> All their reactions occur in the mitochondria. <4> One of its substrates is ribose. <5> It is produced in the liver.
[EX A]:
5