Teaching DSSSB Physical Education Teacher 2022 Mock Test General Science Biology Human body

মানুষের নখ তৈরি হয়

A. রঙ্গক

B. ইলাস্টিন

C. অ্যালবুমিন 

D. কেরাটিন

1
A
2
D
3
C
4
B
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