With Respect to Histone Modifications, Which, If Any, of the Following

question 19

Multiple Choice

With respect to histone modifications, which, if any, of the following statements, is true?

• A) histone acetylation always means adding an acetyl group to the side chain of a lysine residue.
• B) in histone acetylation each lysine of the histone is acetylated.
• C) in histone phosphorylation a phosphate group is transferred to the side chain of a serine .
• D) in histone methylation it is the DNA that coils around a nucleosome that is methylated, not the histone itself.

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Definitions:

Memory Loss

The inability to remember information or experiences, ranging from temporary forgetfulness to long-term memory impairments, such as amnesia.

Permanent Brain Damage

Irreversible injury to the brain tissue that affects cognitive, physical, or emotional functioning, often resulting from trauma, lack of oxygen, or neurological illness.

Medical Conditions

Any disorder, illness, or disease that affects the body or mind’s normal functioning.

Delirium

An acute mental disturbance characterized by confusion, disorientation, and disrupted attention and cognition, often with a sudden onset.