Multiple choice

Typically, the brain comprises only 2% of the body's total weight, but consumes how much of the body's energy?

  1. 2%

  2. 20%

  3. 50%

  4. 80%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Although the brain accounts for only about 2% of an adult's total body weight, it is highly active and demands a disproportionate amount of resources. It consumes approximately 20% of the body's total energy and oxygen to maintain normal function.

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