Read the givenpassage ansanswer question number1 to 5 that follow : Amino acids are classified as acidic,baisc orneutral dependingunpon the relative numberofmakes it neutral , morenumberof amino than carboxyl groups makes it basic and more carboxyl groups are compared to amino groups makes it acidic . Theamino acids ,which can be synthesised in the body and mustbe obtained through diet, areknown as essential amino acids. Amino acids areusually colourless, crystalline solids. Theseare water-solute, high melting solids and behavelikesalts rather than simple amines or carboxylicacids . This behaviouris dueto the presence ofboth acidic (carboxyl group) and basic (amino group) in the samemlecule . In aqueous solution , the carboxyl group can losea proton and amino group can accepta proton , giving rise to a dipolarion known as zwitter ion. This is neutral but contains both positiveandnegative charges. In zwitter ionic , form amino acids show amphoteric behaviouras they reactboth with acids and bases. Whatare the different classes ofamino acids ?