Answer:
Why is aerogel blue? The sky, glaciers and aerogel all have tiny particles or bubbles that scatter light.
Explanation:
Answer:
Polypeptide
Explanation:
Amino acids are the building block and simplest unit of protein molecules. The structural composition of each amino acids is made up of an amine group (-NH2), a carboxylic acid group (-COOH), a hydrogen atom (H) and a R side chain that differentiates every amino acid from one another.
In a reaction process called condensation, amino acids are chemically joined together via the amine group of one and the carboxylic group of another. This process releases water molecule (H20) to form a bond called PEPTIDE bond between the amino acids. Several amino acids in their 100’s or 1000’s that are chemically joined this way forms a POLYPEPTIDE chain, which in turn forms the protein molecule.
The addition of acetyl groups to histones is associated with chromatin condensation and and higher levels of gene expression
First one is A
Second one is B
Hope this helps !
