If the basic formula of an α-amino acid is R-CH(NH2)-COOH, where R is the side chain, what is the primary point of distinction between any two proteins?(a) Number of amino groups(b) Number of carboxyl groups(c) The side chain R(d) Relative positions of amino, carboxyl groups and RI had been asked this question in final exam.My doubt stems from Biomolecules in division Biomolecules of Chemistry – Class 12

If the basic formula of an α-amino acid is R-CH(NH2)-COOH, where R is

1.	If the basic formula of an α-amino acid is R-CH(NH2)-COOH, where R is the side chain, what is the primary point of distinction between any two proteins?(a) Number of amino groups(b) Number of carboxyl groups(c) The side chain R(d) Relative positions of amino, carboxyl groups and RI had been asked this question in final exam.My doubt stems from Biomolecules in division Biomolecules of Chemistry – Class 12
Answer» Correct option is (c) The SIDE chain R The best explanation: α-amino ACIDS are the constituents of proteins. Different proteins are formed by polymerisation of different α-amino acids, which are formed due to the difference in the side chain substituted group R, which MAY be as simple as hydrogen or as COMPLEX as imidazole.

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