Keratin … A. is an insoluble protein B. occurs in the dermis of mammals C. is found in structures such as hair, nails and horns D. A and B E. A and C
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Step 1
It does not occur in the dermis of mammals, but rather in the epidermis, so option B is incorrect. Keratin is found in structures such as hair, nails, and horns, so option C is correct. Show more…
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