(B) Alpha-keratin is a fibrous structural protein. It is found in high concentrations in the skin and epidermal appendages such as hair,nails,and horn

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(B) Alpha-keratin is a fibrous structural protein. It is found in high concentrations in the skin and epidermal appendages such as hair,nails,and horns in vertebrates.

Class 11 Biology Biomolecules Proteins

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Alpha-keratin is a protein present in

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A
blood
B
skin
C
lymph
D
eggs

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Biomolecules

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Proteins

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Which amino acid contains a non-polar $R$ group?

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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

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