Which term refers to energy rich organic compounds made from carbon, hydrogen, and oxygen?

• A. Lipid
• B. Fatty Acid
• C. Carbohydrate
• D. Cholesterol

Answer: (C)

This question tests your ability to identify the biomolecule that is typically described as energy-rich and made from carbon, hydrogen, and oxygen.

Carbohydrates fit this description best. They are the main source of quick energy for many organisms and have a general composition of carbon, hydrogen, and oxygen in roughly a 1:2:1 ratio (the familiar CH2O form). Examples like glucose and starch illustrate how carbohydrates can provide rapid energy through cellular respiration. Lipids also store energy, but they are not defined by the CHO 1:2:1 balance and include components like fatty acids and cholesterol, which are not the primary energy sources. Therefore, the term that matches the description most directly is carbohydrate.