The addition of acetyl groups to histones is associated with chromatin condensation and and higher levels of gene expression
Answer:
lose water , closed
Explanation:
When the two guard cells are turgid (swollen with water), the stoma is open, and, when the two guard cells are flaccid, it is closed.
Hope this helps!
B)
Because it flows. I dunno about you, but that sounds like a liquid to me! Sorry if i'm wrong.
Other biological molecules that contain the element of N would be nucleic acids such as DNA and or RNA. There are found in the nucleotides that constitute or make up these nucleic acids.
