Amino acids that have the possibility of participating in hydrogen bonds with suitable partners are those that have hydrophilic polar side chains.
Answer:
Europa
Explanation:
There are 4 Galilean moons and Europa is the smallest. Scientists believe that there is ocean below the sheet of ice.
It is the first option. Atmospheric nitrogen is very stable so there fore hard to react with. But bacteria contain molecules that can break the bond of nitrogen.
The answer is operon. These set of genes are transcribed together because they share a single promoter and operator. Therefore they are transcribed into one mRNA and translated together. These genes are, therefore, expressed together at all times. Examples are the tryptophan and lac operons of Escherichia coli
