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: What percentage of the bicarbonate filtered in the glomerulus is reabsorbed under normal conditions along the nephron and in which segment is most of this reabsorption produced ?: 
 Options:  <1> It is reabsorbed almost 100%, mostly in the collector duct. <2> Approximately 50% is reabsorbed, mostly in the proximal convoluted tubule. <3> Approximately 50% is reabsorbed, mostly in the distal convoluted tubule. <4> Less than 20% is reabsorbed, mostly in the collecting duct. <5> It is almost 100% reabsorbed, mostly in the proximal convoluted tubule.
[A]: 5


[Q]: Question: In the receptor-mediated endocytosis intervenes: 
 Options:  <1> Only the clathrin. <2> Only the adaptin. <3> Adaptine and clathrin. <4> Chaperones <5> Only the proteins of the membrane.
[A]: 3


[Q]: Question: Pseudomonas aeruginosa is typically: 
 Options:  <1> Sensitive to most antibiotics used in human medicine. <2> Pathogen obligated. <3> Opportunistic pathogen. <4> Commensal bacteria of the digestive tract. <5> Intracellular pathogen.
[A]:
3