TASK DEFINITION: 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'.
PROBLEM: Question: Acetylation of histones affects transcription: 
 Options:  <1> Blocking the incorporation of other components of the transcription machinery. <2> Preventing the remodeling of chromatin. <3> Facilitating the action of helicases. <4> Decreasing sensitivity to nuclear receptors. <5> Reducing the affinity of histones for DNA.

SOLUTION: 5

PROBLEM: Question: The lithium aluminum hydride is a nucleophile strong enough to be added to the carbonyl group of the carboxylate ions. This process allows obtaining: 
 Options:  <1> Primary alcohols. <2> Secondary alcohols <3> Tertiary alcohols. <4> Ketones <5> Ethers

SOLUTION: 1

PROBLEM: Question: The forces that stabilize the alpha helix are: 
 Options:  <1> Intra-chain hydrogen bridges parallel to the axis of the helix. <2> Disulfide bridges between methionines. <3> Hydrogen bridges between chains perpendicular to the axis of the helix. <4> Van der Waals forces among the radicals. <5> Links between lysine radicals.

SOLUTION:
1