Question

question 7 of 10
which two types of biomolecules contain only carbon, hydrogen, and oxygen?
a. lipids and nucleic acids
b. carbohydrates and proteins
c. carbohydrates and lipids
d. nucleic acids and proteins

Explanation:

Carbohydrates have the general formula $C_x(H_2O)_y$, consisting of carbon, hydrogen, and oxygen. Lipids are composed of carbon, hydrogen, and oxygen, often with a high ratio of hydrogen to oxygen. Nucleic acids contain nitrogen and phosphorus in addition to carbon, hydrogen, and oxygen. Proteins contain nitrogen along with carbon, hydrogen, and oxygen.

Answer:

C. Carbohydrates and lipids