Adult human brain is about_________% of the total body weight.
Correct answer: A. 2%
- A. 2%
- B. 3%
- C. 7%
- D. 8%Biological Sciences
Explanation
The adult brain weighs roughly 1.3 to 1.4 kg, which is about 2% of average adult body weight. It consumes a much larger share of the body's energy, so its energy use should not be confused with its mass percentage.
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