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: Contains abundant glycogen: 
 Options:  <1> Hepatocytes <2> Plasma cells. <3> Lymphocytes <4> Baited cells. <5> Fibroblasts.
[EX A]: 1

[EX Q]: Question: The electron transport molecules: 
 Options:  <1> They are coenzymes of a nucleotide nature. <2> They exchange electrons in oxidation-reduction reactions. <3> They are molecules capable of oxidation and reduction. <4> FAD (flavin adenine dinucleotide) and FMN (flavin mononucleotides) are electron transport molecules. <5> All are true.
[EX A]: 5

[EX Q]: Question: The term isocratic is used in high pressure liquid chromatography (HPLC) when: 
 Options:  <1> The mobile phase is at a constant temperature. <2> The stationary phase is in equilibrium with the mobile phase. <3> The mobile phase consists of a single solvent with a constant composition. <4> The flow rate of the mobile phase is regulated. <5> All the options are correct.
[EX A]:
3