Question

what are the elements found in carbohydrates and lipids?
○ nitrogen, oxygen, carbon
○ carbon, nitrogen, hydrogen
○ carbon, nitrogen, oxygen
○ carbon, hydrogen, oxygen

Explanation:

Carbohydrates are composed of carbon, hydrogen, and oxygen (in a ratio of approximately 1:2:1, like in glucose \(\ce{C6H12O6}\)). Lipids (such as fats and oils) are also made of carbon, hydrogen, and oxygen, with a higher proportion of hydrogen to oxygen compared to carbohydrates. Nitrogen is not a primary element in either carbohydrates or typical lipids (though some complex lipids or modified carbohydrates might have nitrogen in specific cases, but the standard elements for both are C, H, O). So the correct option is the one with Carbon, Hydrogen, Oxygen.

Answer:

D. Carbon, Hydrogen, Oxygen (assuming the last option is labeled D; if the options are labeled differently, adjust the label but keep the text "Carbon, Hydrogen, Oxygen")