(a) (a) Essential Amino Acid - Lysine , Non Essential Amino Acids - Valine (b) (b) Keratin is a fibrous protein whereas insulin is a globular protein .(b) (a) Essential Amino Acid - Lysine , Non Essential Amino Acids - Glycine (b) (b) Keratin is a fibrous protein whereas insulin is a globular protein .(c)(a) Essential Amino Acid - Proline , Non Essential Amino Acids - Leucine(b) (b) Keratin is a fibrous protein whereas insulin is a globular protein (d)None of the above