Which of the following is not a part of the body's nonfat components?
a. internal organs
b. skin
c. muscle
d. tendons

The correct answer is letter B. 

Skin is not a part of the body's non-fat components. The other three choices, internal organs, muscles, and tendons are all parts of nonfat components of the body's overall structures. The skin is a different tissue component that covers and protects the body while nonfat components are found within the body.  

it would be

answer; the above statement is (true);

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.