Answer:
Why is aerogel blue? The sky, glaciers and aerogel all have tiny particles or bubbles that scatter light.
Explanation:
I think is D,,,,,,,,,,,,,,,,,
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.
Answer:
c
Explanation:
a b and c are all signs of life but energy can be in objects not just life.
Hi
i hope you are having a great afternoon
your answer is: D)Alkaline solution is not a property of water.
I hope this helped you out have great day
FAithRawlins14
