GK
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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90%
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50%
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60%
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70%
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Detailed explanation-1: -Up to 60% of the human adult body is water. According to Mitchell and others (1945), the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.
Detailed explanation-2: -Most of the human body is water, with an average of roughly 60%. The amount of water in the body changes slightly with age, sex, and hydration levels. While the average percentage of water in a person’s body is around 60%, the percentage can vary from roughly 45–75%.
Detailed explanation-3: -The normal range for adult women varies between 45% and 60%. For men, the ideal body water percentage fluctuates between 50% and 65% of the total body. In babies, that number is much higher.
Detailed explanation-4: -An individual’s total body water can be determined using flowing-afterglow mass spectrometry (FA-MS) to measure the abundance of deuterium in breath samples.