Question

question 1 of 10
the _______________ is composed mainly of keratin.
select the correct response:
nail bed
nail cuticle
matrix
onyx

Explanation:

Nails are mainly composed of keratin. The nail plate (onyx) is the hard - visible part of the nail and is made of keratin. The nail bed is the skin beneath the nail plate, the nail cuticle is a protective layer of skin at the base of the nail, and the matrix is the part of the nail where nail cells are produced.

Answer:

onyx