Multiple Choice
Which inorganic substances are essential for body growth and function?
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2. Cell Chemistry & Cell Components
Atoms- Smallest Unit of Matter
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What percentage of the human body weight is made up of oxygen?
A
25%
B
10%
C
45%
D
65%
Verified step by step guidance1
Understand that the human body is composed of various elements, with oxygen being one of the most abundant.
Recognize that oxygen is a major component of water, which makes up a significant portion of the human body.
Consider that the human body is approximately 60% water, and since water is composed of two hydrogen atoms and one oxygen atom (H₂O), oxygen contributes significantly to body weight.
Acknowledge that oxygen is also a part of other compounds in the body, such as proteins, fats, and carbohydrates, further contributing to its overall percentage.
Conclude that due to its presence in water and other compounds, oxygen makes up about 65% of the human body weight.
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