Flu is short for Influenza
Protection used during sex so neither party is infected with such like an STD.
Answer:
R group
Explanation:
All amino acids have both an amino group and a carboxyl group. The R-group (sometimes called the variable group) is what differentiates amino acids from one another. These R-groups have various structural properties that dictate the function of the resulting amino acid chain.
I think it’s the frontal lobe
