Answer:
true
Explanation:
pa brainliest po please
<u><em>#carryonlearning</em></u>
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.
Hypotonic - because there is a higher concentration inside the cell than outside of it
Medulla Oblangata is the part of the brain that controls your heart beat
The smooth endoplasmic reticulum<span>, or </span>smooth ER<span>, is an organelle found in both animal </span>cells<span> and </span>plant cells<span>. An organelle is a subunit within a </span>cell<span> that has a specialized function. The main function of the </span>smooth ER<span> is to make cellular products like hormones and lipids</span>
