Multiple choice

How much our body contains about water by mass?

  1. 65%

  2. 70%

  3. 80%

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The human body contains approximately 70% water by mass. Water is essential for various biological processes including temperature regulation, waste removal, and nutrient transport. Different tissues have varying water content - blood is about 92% water, while bones contain about 22% water.