What layer of the skin is composed of fatty tissue and serves as an insulator for the body?

Select the correct answer from each drop-down menu proteins are

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?