shahzaib khan on Nearpeer MDCAT Common Room

@sir Humza plz check it . hamari book mai likha hai k 170 different type of A.acids disscoverd in cells and tissue ,out of these 25 are involved in protein synthsis .most proteins,however,are made up of 20 types of A.acids . toh phir question mai mai konsa option salect karo 25 ya 20 students agar ap mai se kisi ko pata hai k konsa best option hai?