In blood, the percentage of water is___________?
Correct answer: C. 90%
- A. 75%
- B. 85%
- C. 90%
- D. 95%Chemistry
Explanation
Blood is roughly 90% water by volume, with the remaining portion consisting mainly of blood cells, proteins, salts and other dissolved substances.
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The human body is studied through its organ systems, including digestion, respiration, circulation, excretion, nervous coordination, reproduction and immunity. Coverage also includes nutrients and deficiency diseases, hormones, blood groups, common infections, vaccines, sanitation and basic first aid, while distinguishing communicable diseases from inherited and lifestyle disorders.
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