Answer:
False
Explanation:
The histones that are more positively charged, tight hardly to negatively charged DNA. So, enzymes, such as acetyltransferases, that reduce the positive charge of histones promote transcription.
Chromatin structure and its modifications can change the package of the DNA and consequently, alter the gene expression. The most common modifications of the chromatin are covalent modifications such as acetylation/deacetylation (by acetyltransferases and eacetylases), methylation (by methyltransferases), and phosphorylation (by kinases). This is the way of gene expression regulation.
The effects of modifications are different, for example methylation promotes condensation of the chromatin and as a consequence, prevents binding of transcription factors to the DNA (transcription is repressed).
Acetylation loosens the association between nucleosomes and DNA (because it neutralizes the positive charge of histones) and consequently promotes transcription. Deacetylation is a process opposite to acetylation.
Cardiac muscle is found in only the heart because the heart is also called cardiac and said to have cardiac muscle.the answer is b. hope this helps :)
Population density refers to the determination of population in a unit area or unit volume. It is generally applicable to the living species, and majorly to the humans. It is an essential geographical term and its a quantity of type number density.
In the given case, it can be seen that New Zealand exhibits a smaller population in comparison to Australia, but it has a greater population density as it encompasses a much smaller region.
On the other hand, the population of Australia is about five times more than New Zealand, but Australia covers about 30 times more area in comparison to what New Zealand covers.
limbic system
Explanation:
center of emotional processing is the amygdala
Answer:
elements of a civilization
Explanation:
idk
