One member of the serine protease family is trypsin. Trypsin cleaves the polypeptide chain by breaking the peptide bond after a lysine (lys) or arginine (arg) amino acid. What would be the product(s) if each of the following peptide molecules were treated with trypsin?
a. leu-thr-phe-ala-ser
b. trp-tyr-lys+ala-phe
c. 2lys+2-arg-va

The protease Trypsin would cleave the peptide molecules in the following ways below.

Explanation:

Each member of the serine protease family cleaves/cuts the bond after a specific amino acid of the substrate due to that specific amino  acid being recognized by a binding structure of the enzyme that is specifically created to bind that  specific amino acid. Therefore the protease would cleave the following peptide molecules in the following ways:

of those who start drinking before they're 15 will develop alcohol dependence

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15