Answer:
The positive charge of the histone proteins get reduced due to the process of histone acetylation, thus making the wrapping of DNA around the histones less tightened. The loose connected DNA afterward associates with the transcription factors for the articulation of the genes situated in that area.
Generally, when there is no requirement of gene anymore, the acetyl groups from the histones get withdrawn by the activity of histone deacetylase enzyme (HDAC9) that makes the DNA tightly wrapped and inaccessible again. In case, when less expression of histone deacetylase enzyme occurs, the process of deacetylation fails to take place. This indicates that within an immune cell, at the time of infection, the inflammatory gene, which was made available does not get re-wrapped firmly around the histones.
Answer:
Neural stem cells are normally found within the brain and spinal cord. NSCs are specialized stem cells that can differentiate into the cell types of the central nervous system, including neurons and glial cells
Explanation:
Nucleus and cell membrane and possibly cytoplasm
The top five risk factors that most often are responsible for foodborne illness outbreaks are:
<span><span>Improper hot/cold holding temperatures of potentially hazardous food.
</span><span>Improper cooking temperatures of food.
</span><span>Dirty and/or contaminated utensils and equipment.
</span><span>Poor employee health and hygiene.
</span><span>Food from unsafe sources</span></span>
