Which pair of molecules both contain carbon atoms? A. Fats and proteins
B. Water and carbohydrates
C. Nucleic acids and water
D. Oxygen gas and fats
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Which pair of molecules both contain carbon atoms? A. Fats and proteins
B. Water and carbohydrates
C. Nucleic acids and water
D. Oxygen gas and fats
The correct answer is A. Fats and proteins.
Explanation: Both fats and proteins are organic molecules that contain carbon atoms as key components of their structure. Fats are made up of glycerol and fatty acids, while proteins are made of amino acids, which also contain carbon in their backbone. In contrast, water, nucleic acids, and oxygen gas do not meet the criteria, as not all of these contain carbon.