What are horns,nails,and hair made of?

  • A
    Collagen
  • B
    Elastin
  • C
    Keratin
  • D
    Cutin

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Similar Questions

Match the following columns correctly.
Column $I$ Column $II$
$(a)$ Actin $(i)$ Transport of respiratory gases
$(b)$ Immunoglobulin $(ii)$ Immunity
$(c)$ Melanin $(iii)$ Pigmentation of the body
$(d)$ Hemoglobin $(iv)$ Muscle movement

What is the number of $-COOH$,$-NH_2$,$-H$,and $-R$ groups respectively in the structure of an amino acid?

Match List-$I$ and List-$II$ with respect to proteins and their functions and select the correct option.
List-$I$List-$II$
$1$. Collagen$p$. Fights infectious agents
$2$. Trypsin$q$. Hormone
$3$. Insulin$r$. Enzyme
$4$. Antibody$s$. Intercellular ground substance

Which of the following macromolecules is found in the structure of hormones and enzymes?

Which conjugated protein is synthesized by copper?

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