Living Environment Translated Arabic 2014 | Page 36

3. Proteins:
a. Made up of carbon, hydrogen, oxygen, nitrogen, and
sulfur
b. Examples: enzymes, skin, hair
c. Function: regulate cell processes and build cell
structures
4. Nucleic Acids:
a. Made up of carbon, hydrogen, oxygen, nitrogen, and
phosphorus
b. Examples: DNA and RNA
c. Function: carry hereditary information ; used to make
proteins