How does histone acetylation affect chromatin?

a. it loosens the chromatin and allows increased transcription.

b. it allows dna to become resistant to damage.

c. it the histones have a greater affinity for dna.

d. it inhibits dna replication by making it more difficult to separate the dna strands.

e. it causes the chromatin to become more condensed in preparation for metaphase.

a. It loosens the chromatin and allows increased transcription.

Explanation:

Histone acetylation makes DNA resistant against damage. Histone acetylation loosens and make changes in the structure of chromatin and make it exposed to the different DNA binding proteins which will cause activation of transcription and other functions of cell

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

as many times as you want