Multiple Choice
Which of the following substances is an organic compound?
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3. Matter and Energy
Classification of Matter
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Which element is present in almost every compound in the human body?
A
Neon
B
Helium
C
Carbon
D
Gold
Verified step by step guidance1
Understand the question is asking which element is present in almost every compound in the human body.
Recall that the human body is primarily made up of organic compounds, which are compounds containing carbon atoms bonded to other elements.
Recognize that elements like neon and helium are noble gases and are chemically inert, so they do not commonly form compounds in the body.
Gold is a metal and is not a major component of biological molecules in the human body.
Therefore, identify carbon as the key element because it forms the backbone of most biological molecules such as proteins, carbohydrates, lipids, and nucleic acids.
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